Alexander Thomson began work in 1834, as a clerk in a lawyers office in Glasgow. One of their clients was an architect, Robert Foote, who was impressed by seeing Thomson's drawings and took him on as an
articled apprentice. He learnt a great deal from getting access to Foote's extensive library and collection of
classical casts, but in 1836 Foote had to retire due to illness. To complete his articles, Thomson became apprenticed to the architect
John Baird, initially as an assistant, and later became chief
draughtsman. Thomson's younger brother George got apprenticed to Baird in the early 1840s. In September 1847 Thomson married Jane Nicholson, and on the same day her sister married another architect, John Baird (unrelated to Thomson's employer, and referred to by biographers as John Baird II), who fell out with his previous partner. In 1848 Thomson joined him in a new partnership, the practice of Baird & Thomson. he entered into practice with his brother
George where he was to enjoy the most productive years of his life. He served as president of both the Glasgow Architectural Society and the Glasgow Institute of Architects. Thomson was an elder of the
United Presbyterian Church of Scotland, and his deep religious convictions informed his work. There is a strong suggestion that he closely identified
Solomon's Temple with the raised
basilica of the same form of his three major churches. , Glasgow He produced a diverse range of structures including villas, a castle, urbane terraces, commercial warehouses,
tenements, and three extraordinary churches. Of these,
Caledonia Road Church (1856–57) is now a ruin, Queen's Park United Presbyterian Church (1869) was destroyed in WWII, and
St Vincent Street Church (1859) is the only intact survivor. Hitchcock once stated,
"[Thomson has built] three of the finest Romantic Classical churches in the world”. Thomson developed his own highly idiosyncratic style from
Greek,
Egyptian and
Levantine sources and freely adapted them to the needs of the modern city. '' on Union Street At the age of 34, Thomson designed his first and only castle, Craigrownie Castle, which stands at the tip of the Rosneath Peninsula in
Cove, overlooking
Loch Long. The six-storey structure is Scots
Baronial in style, featuring a central tower with
battlements, steep
gables and
oriel windows, in addition to a
chapel and a
mews cottage. Thomson's villa designs were realized at
Langside,
Pollokshields,
Helensburgh, Cove, the
Clyde Estuary, and on the
Isle of Bute. His "mature villas are Grecian in style while resembling no other
Greek Revival houses,...[and they] are dominated by horizontal lines and rest on a strong podium." According to
Gavin Stamp, "Thomson carefully designed his villas with symmetries within an overall asymmetry in a personal language in which the horizontal discipline of a continuous governing order—whether expressed or implied—was never abandoned. Other important works still standing include Moray Place, Great Western Terrace,
Egyptian Halls in Union Street, Grosvenor Building, Buck's Head Building in Argyle Street, Grecian Buildings in
Sauchiehall Street,
Walmer and
Millbrae Crescents, and his villa,
Holmwood House, at
Cathcart. in
Langside, c. 1870Grave monuments designed by Thomson that are worthy of study include those to the Revd. A.O. Beattie and the Revd. G.M. Middleton, as well as that for John McIntyre in
Cathcart Old Parish Cemetery. Thomson was a
visionary who introduced into our vocabulary some of the essential elements of
sustainable housing. This argument hinges on an unrealized design Thomson prepared in 1868 for the Glasgow City Improvement Trust, an agency of the Town Council given the task of redeveloping a large area of slum housing centred on the medieval Old Town. The Trust invited Thomson and five other prominent architects to propose designs for the reconstruction of various parcels of land along the spine of Glasgow's
High Street. Thomson suggested that closely spaced parallel tenements be built within the central courtyard, the ends of which will be open to facilitate
ventilation. He also proposed that alternate streets be glazed for better warmth and safety for the residents. Although Thomson's ideas failed to catch on at the time, new research and
CAD techniques have helped show how revolutionary was his proposal for improved workers' housing. ==Writings==