Treetop walkway A
canopy walkway, which opened in 2008, takes visitors on a walk above the ground, in the tree canopy of a woodland
glade. Visitors can ascend and descend by stairs and by a
lift. The walkway floor is perforated metal and flexes under foot; the entire structure sways in the wind. It was designed by
David Marks. The accompanying photograph shows a section of the walkway, including the steel supports, which were designed to rust to a tree-like appearance to help the walkway fit in visually with its surroundings. A short video detailing the construction of the walkway is available online.
Lake Crossing The Lake Crossing bridge, made of granite and bronze, opened in May 2006. Designed by
Buro Happold and
John Pawson, it crosses the lake and was previously named in honour of
Dr Mortimer and Theresa Sackler. The minimalist-styled bridge is designed as a sweeping double curve of black granite. The sides of the bridge are formed of bronze posts that give the impression, from certain angles, of forming a solid wall while, from others, and to those on the bridge, they are clearly individual entities that allow a view of the water beyond.
The Hive The Hive opened in 2016 and is a multi-sensory experience designed to highlight the extraordinary life of bees. It stands 17 metres (56 ft) tall and is set in a wildflower meadow. The Hive was designed by English artist
Wolfgang Buttress. The Hive has been created using thousands of aluminium pieces that are presented in the shape of a honeycomb. It was initially installed as a temporary exhibition, but was given a permanent home at Kew Gardens due to its popularity.
Vehicular tour Kew Explorer is a service that takes a circular route around the gardens, provided by two 72-seater electric
road trains. A commentary is provided by the driver and there are several stops. A map of the gardens is available on the Kew Gardens website.
Compost heap Kew has one of the largest
compost heaps in Europe, made from green and woody waste from the gardens and the manure from the stables of the
Household Cavalry. The compost is mainly used in the gardens, but on occasion has been auctioned as part of a fundraising event for the gardens. The compost heap is in an area of the gardens not accessible to the public,
Plant houses Alpine House In March 2006, the Davies Alpine House opened, the third version of an alpine house since 1887. Although only long the apex of the roof arch extends to a height of in order to allow the natural airflow of a building of this shape to aid in the all-important ventilation required for the type of plants to be housed. The new house features a set of automatically operated blinds that prevent it from overheating when the sun is too hot for the plants together with a system that blows a continuous stream of cool air over the plants. The main design aim of the house is to allow maximum light transmission. To this end the glass is of a special low iron type that allows 90 per cent of the ultraviolet light in sunlight to pass. It is attached by high tension steel cables so that no light is obstructed by traditional glazing bars. To conserve energy the cooling air is not refrigerated but is cooled by being passed through a labyrinth of pipes buried under the house at a depth where the temperature remains suitable all year round. The house is designed so that the maximum temperature should not exceed . Kew's collection of
alpine plants (defined as those that grow above the
tree line in their locale – ground level at the poles rising to over ), extends to over 7000. As the Alpine House can only house around 200 at a time the ones on show are regularly rotated.
Nash Conservatory Originally designed for
Buckingham Palace, this was moved to Kew in 1836 by King
William IV. The building was formerly known as the
Aroid House No. 1 and was used to display species of
Araceae, the building was listed Grade II* in 1950. With an abundance of natural light, the building is now used for various exhibitions, weddings, and private events. It is also now used to exhibit the winners of the photography competition.
Orangery The
Orangery was designed by
Sir William Chambers, and was completed in 1761. It measures . It was found to be too dark for its intended purpose of growing
citrus plants and they were moved out in 1841. After many changes of use, it is currently used as a restaurant.
Palm House The Palm House (1844–1848) was the result of cooperation between architect
Decimus Burton and
iron founder Richard Turner, The Palm House was originally heated by two coal-fired boilers, with a chimney, the "Shaft of the Great Palm-Stove", now known as the Campanile, near the Victoria Gate. Coal was brought in by a light railway, running in a tunnel, using human-propelled wagons. The tunnel acted as a flue between the boilers and the chimney, but the distance proved too great for efficient working, and so two small chimneys were added to the Palm House. In 1950 the railway was electrified. The tunnel is now used to carry piped hot water to the Palm House, from oil-fired boilers located near the original chimney, which is extant, and is
Grade II listed.
Princess of Wales Conservatory Conservatory Kew's third major conservatory, the
Princess of Wales Conservatory, designed by architect Gordon Wilson, was opened in 1987 by
Diana, Princess of Wales in commemoration of her predecessor
Augusta's associations with Kew. It replaced 26 smaller buildings. In 1989 the conservatory received the Europa Nostra award for conservation. The conservatory houses ten computer-controlled micro-climatic zones, with the bulk of the greenhouse volume composed of Dry Tropics and Wet Tropics plants. Significant numbers of
orchids,
water lilies,
cacti,
lithops,
carnivorous plants and
bromeliads are housed in the various zones. The cactus collection also extends outside the conservatory where some hardier species can be found. The conservatory has an area of . As it is designed to minimize the amount of energy taken to run it, the cooler zones are grouped around the outside and the more tropical zones are in the central area where heat is conserved. The glass roof extends down to the ground, giving the conservatory a distinctive appearance and helping to maximize the use of the sun's energy. During the construction of the conservatory a time capsule was buried. It contains the seeds of basic crops and endangered plant species and key publications on conservation. There is a viewing gallery in the central section from which visitors can look down on that part of the collection.
Waterlily House The Waterlily House is the hottest and most humid of the houses at Kew and contains a large pond with varieties of water lily, surrounded by a display of economically important heat-loving plants. It closes during the winter months, as the waterlilies struggle to survive in reduced daylight during autumn and winter. During this interval, the House is cleaned in order to reduce pests. It was built to house
Victoria amazonica, which was then the largest known species of the water lily family
Nymphaeaceae. This plant was originally transported to Kew in vials of clean water and arrived in February 1849, after several prior attempts to transport seeds and roots had failed. Although various other members of Nymphaeaceae grew well, the house did not suit the
Victoria, purportedly because of a poor ventilation system, and this specimen was moved to another, smaller, house (
Victoria amazonica House No. 10). The
ironwork for the Waterlily House project was provided by
Richard Turner and the initial construction was completed in 1852. Initially, the heat for the house was obtained by running a flue from the nearby Palm House, but later it was equipped with a boiler of its own.
The Davies Exploration House Originally known as the
Australian House, the house was a gift from the
Australian Government. It was designed by S L Rothwell (
Ministry of Works) with consultant engineer J E Temple and was constructed by the Crittall Manufacturing Company Ltd. It opened in 1952. From 1995 until 2018, it was known as the Evolution House. The building is listed under the Planning (Listed Buildings and Conservation Areas) Act 1990 for its special architectural or historic interest.
Bonsai House The
Bonsai House was formerly known as the
Alpine House No. 24 prior to the construction of the Davies Alpine House. Kew's bonsai collection has around sixty specimens, displayed seasonally in the House, the smallest only 10 centimetres tall, and the oldest being 180 years old.
Former plant houses The following plant houses were in use in 1974. All have since been demolished, with many of the collections being moved into the Princess of Wales Conservatory. In fact the dragons were made of wood painted gold, and simply rotted away with the ravages of time. The walls of the building are composed of brick. The staircase, 253 steps, is in the center of the building. During the
Second World War holes were cut in each floor to allow for drop-testing of model bombs. The Pagoda was closed to the public for many years but was reopened for the summer months of 2006. It has been renovated in a major restoration project and reopened under the aegis of
Historic Royal Palaces in 2018. 80 dragons have been remade and now sit on each storey of the building.
Japanese Gateway (Chokushi-Mon) Built for the
Japan-British Exhibition (1910) and moved to Kew in 1911, the Chokushi-Mon ("Imperial Envoy's Gateway") is a four-fifths scale replica of the
karamon (gateway) of the
Nishi Hongan-ji temple in
Kyoto. It lies about north of the Pagoda and is surrounded by a reconstruction of a traditional Japanese garden.
Minka House Following the Japan 2001 festival, Kew acquired a Japanese wooden house called a
minka. It was originally erected in around 1900 in a suburb of
Okazaki and is now located within the bamboo collection in the west-central part of Kew Gardens. Japanese craftsmen reassembled the framework and British builders who had worked on the
Globe Theatre added the mud wall panels. Work on the house started on 7 May 2001 and, when the framework was completed on , a Japanese ceremony was held to mark what was considered an auspicious occasion. Work on the building of the house was completed in November 2001 but the internal artifacts were not all in place until 2006.
Queen Charlotte's Cottage Within the conservation area is a cottage that was built sometime before 1771 for
Queen Charlotte by her husband
George III. It has been restored by
Historic Royal Palaces and is separately administered by them. It is open to the public on weekends and bank holidays during the summer.
King William's Temple A double porticoed
Doric temple in stone with a series of cast-iron panels set in the inside walls commemorating British military victories from
Minden (1759) to
Waterloo (1815). It was built in 1837 by Sir
Jeffery Wyatville, and originally called
The Pantheon. Named after King
William IV (1830–37). It is Grade II listed.
Temple of Aeolus A domed rotunda with eight
Tuscan columns. The original temple was built in 1763 by Sir
William Chambers. The present temple is an 1845 replacement by
Decimus Burton. It is Grade II listed. The temple was one of three originally named to honour British victories in the
Seven Years' War, in this case the name commemorates
HMS Aeolus.
Temple of Arethusa A small Greek temple portico with two
Ionic columns and two outer Ionic pillars; it is pedimented with a cornice and key pattern frieze. It was built in 1758 by Sir William Chambers. It is Grade II listed. Similar to the temple of Aeolus and Bellona, she was later named to commemorate the warship
HMS Arethusa.
The Ruined Arch A brick arch with rustication in stucco. A triple-arched opening with oculi above lower side arches, it has a stone band course and a fragmented blocked cornice and brick offering, and a corniced doorway. It was built in 1759–60 by Sir William Chambers. It is Grade II* listed.
Ice House The Ice House is believed to be early 18th-century, it has a brick dome with an access arch and barrel-vaulted passageway, covered by a mound of earth. It is Grade II listed.
Temple of the Sun Formerly located 90 metres southeast of the Orangery. It was a glazed building surrounded by eight classical columns. The temple was destroyed by a falling tree in the storm of 27 March 1916, some sources say 28 May 1916.
Kew Palace , with the sundial in the foreground Kew Palace is the smallest of the British royal palaces. It was built by
Samuel Fortrey, a Dutch merchant in around 1631. It was later purchased by
George III. The construction method is known as
Flemish bond and involves laying the bricks with long and short sides alternating. This and the gabled front give the construction a Dutch appearance. To the rear of the building is the "Queen's Garden" which includes a collection of plants believed to have medicinal qualities. Only plants that were extant in England by the 17th century are grown in the garden. The building underwent significant restoration, with leading conservation architects
Donald Insall Associates, before being reopened to the public in 2006. It is administered separately from Kew Gardens, by
Historic Royal Palaces. In front of the palace is a
sundial, which was given to Kew Gardens in 1959 to commemorate a royal visit. It was sculpted by Martin Holden and is a replica of one by
Thomas Tompion, a celebrated 17th-century clockmaker, which had been sited near the surviving palace building since 1832 to mark the site of
James Bradley's observations leading to his discovery of the
aberration of light.
Galleries and museums Admission to the galleries and museum is free after paying admission to the gardens. The International Garden Photographer of the Year Exhibition is an annual event with an indoor display of entries during the summer months.
Shirley Sherwood Gallery The Shirley Sherwood Gallery of Botanic Art opened in April 2008, and holds paintings from Kew's and Dr
Shirley Sherwood's collections, many of which had never been displayed to the public before. It features paintings by artists such as
Georg D. Ehret, the
Bauer brothers,
Pierre-Joseph Redouté and
Walter Hood Fitch. The paintings and drawings are cycled on a six-monthly basis. The gallery is linked to the Marianne North Gallery (see below).
Museum No. 1 Near the Palm House is a building known as the General Museum or "Museum No. 1" (even though it is now the only museum on the site), which was designed by
Decimus Burton and opened in 1857. Housing Kew's economic botany collections including tools, ornaments, clothing, food and medicines, its aim was to illustrate human dependence on plants. The building was refurbished in 1998. The upper two floors are now an education center and the ground floor houses The Botanical restaurant. Due to its historical holdings, Kew is a member of the
London Museums of Health & Medicine group.
Marianne North Gallery The Marianne North Gallery was built in the 1880s to house the paintings of
Marianne North, an MP's daughter who travelled alone to North and South America, South Africa, and many parts of Asia, at a time when women rarely did so, to paint plants. The gallery has 832 of her paintings. She left the paintings to Kew on condition that the layout of the paintings in the gallery would not be altered. The gallery had suffered considerable structural degradation since its creation and during a period from 2008 to 2009 major restoration and refurbishment took place, with works led by leading conservation architects
Donald Insall Associates. During the time the gallery was closed the opportunity was also taken to restore the paintings to their original condition. The gallery reopened in October 2009. The gallery originally opened in 1882 and is still the only permanent exhibition in Great Britain dedicated to the work of one woman.
Museums and administration buildings The
School of Horticulture building was formerly known as the
Reference Museum or
Museum No. 2. is a former residence of the
Duke of Cambridge (1819–1904). became part of the gardens in 1904, and was opened in 1910 as the
Museum of British Forestry or
Museum No. 4. After 1958 it was known as the
Wood Museum and displayed samples of wood from around the world. By 1974 the only identified buildings were the Director's Office and the Wood Museum formerly Cambridge cottage. ==Science==