The exterior of the church is notable for its distinctive lantern spire, which can be easily spotted from the river, despite being overshadowed by many taller buildings of the city's business district. The nave and the sanctuary house fixed woodwork carved with the vine as the dominant motif, referencing Christ: "I am the vine, you are the branches". In the southeast corner of the church is a stained glass window: Our Lady stands in glory as in
Revelation and St Nicholas holds a ship. An inscription reads: "For the Healing of the Nations". A war memorial for the
Cunard Steamship Company, placed in the church in 1989, is in the north east corner. The church organ is by
Rushworth and Dreaper of Liverpool, and is dedicated to the memory of Charles W. Bridson, organist 1902–1949. Hanging between the nave and the sanctuary is the
Rood, a figure of Christ with Our Lady and
St John. The Rood is carved from the old oak bell frame from the tower. The church was rebuilt with one chapel to the north of the sanctuary and another to the south. On the south is the chapel of St Peter, commemorating the old co-parish church of St Peter's, which stood on Church Street. The 18th-century wooden table was once the altar there. The
Sacrament is reserved here, and the chapel is used for weekday Communion services. Charred timbers from the old church were used to form the cross on the wall. The chapel to the north was that of St George, commemorating the former, nearby church of that dedication demolished to make way for the Queen Victoria monument at the head of Castle Street. This commemoration of two historic churches was disturbed by the introduction of a new dedication for this chapel in 1993. In that year the Maritime Chapel of St Mary del Quay was dedicated as part of the celebrations for the 50th anniversary of the
Battle of the Atlantic. It memorialises the
medieval shrine. A statue of Our Lady, cast in bronze, is shown standing in the prow of a boat. The statue was created by Liverpool artist
Arthur Dooley. The furnishings in the chapel are by Robin McGhie. The chapel contains a Book of Remembrance, listing the names of mariners lost at sea. Behind the church's high altar is an icon of the crucifixion painted by the Romanian artist
Tatiana Nichita, donated in commemoration of
Merseyside Police Constable Neil Doyle, who was murdered in Liverpool city centre while off-duty, and whose funeral took place at the church. The church is linked to the famous phrase, "I'll be waiting till Dick docks", meaning "I'll be waiting a long time". This refers to the ship the
Richard Donnelly, which is said to have sunk in
Liverpool Bay. Another version of this phrase is used when an unlikely promise is made; "I'll repay that loan soon!" "Oh, yes – when Donnelly docks!" implying that the action is never going to happen. A gilded copper weather vane in the form of the ship is on top of the tower of St Nicholas'. The weather vane measures 4 ft 4 (1.3m). The vane probably survived the fall of the tower in 1810. It was renovated before re-erection; the sails are dated 1815. Historic photos show ships as weather vanes on the Bluecoat Hospital and one of the Goree warehouses. The vane was added to the church in 1746 when the spire was built on the tower. The illustration in ''Enfield's History of Liverpool 1773'' clearly shows the ship. Despite the traditions, no record of a Liverpool ship named
Donnely or
Richard Donnelly has been found. This has been confirmed by Mr Tibble, Director of the Liverpool Maritime Museum. Unfortunately for local mythology, there is some serious misunderstanding about the weather vane. ==See also==