The architectural style of Belfast's public buildings range from a small set of Georgian buildings, many examples of Victorian, including the main Lanyon Building at Queen's University Belfast and the Linenhall Library, (both designed by Sir Charles Lanyon). There are also many examples of Edwardian, such as the City Hall, to modern, such as the Waterfront Hall.
The City Hall was finished in 1906 and was built to reflect Belfast's city status, granted by Queen Victoria in 1888. The Edwardian architectural style of Belfast City Hall influenced the Victoria Memorial in Calcutta, India, and Durban City Hall in South Africa. The dome is 173 ft (53 m) high and figures above the door state "Hibernia encouraging and promoting the Commerce and Arts of the City".
Among the city's grandest buildings are two former banks: Ulster Bank in Waring Street (built in 1860) and Northern Bank, in nearby Donegall Street (built in 1769). The Royal Courts of Justice in Chichester Street are home to Northern Ireland's Supreme Court. Many of Belfast's oldest buildings are found in the Cathedral Quarter area, which is currently undergoing redevelopment as the city's main cultural and tourist area. Windsor House, 262 ft (80 m) high, has 23 floors and is the second tallest building (as distinct from structure) in Ireland. Work has started on the taller Obel Tower, which already surpasses the height of Windsor House in its unfinished state.
Scottish Provident Institution, an example of Victorian architecture in Belfast
The ornately decorated Crown Liquor Saloon, designed by Joseph Anderson in 1876, in Great Victoria Street is one of only two pubs in the UK that are owned by the National Trust (the other is the George Inn, Southwark in London). It was made internationally famous as the setting for the classic film, Odd Man Out, starring James Mason. The restaurant panels in the Crown Bar were originally made for Britannic, the sister ship of the Titanic, built in Belfast.
The Harland and Wolff shipyard has two of the largest dry docks in Europe, where the giant cranes, Samson and Goliath stand out against Belfast's skyline. Including the Waterfront Hall and the Odyssey Arena, Belfast has several other venues for performing arts. The architecture of the Grand Opera House has an oriental theme and was completed in 1895. It was bombed several times during the Troubles but has now been restored to its former glory. The Lyric Theatre, (re-opened 1 May 2011 after undergoing a rebuilding programme) the only full-time producing theatre in the country, is where film star Liam Neeson began his career. The Ulster Hall (1859–1862) was originally designed for grand dances but is now used primarily as a concert and sporting venue. Lloyd George, Parnell and Patrick Pearse all attended political rallies there.
A legacy of the Troubles are the many 'peace lines' or 'peace walls' that still act as barriers to reinforce ethno-sectarian residential segregation in the city. In 2017, the Belfast Interface Project published a study entitled 'Interface Barriers, Peacelines & Defensive Architecture' that identified 97 separate walls, barriers and interfaces in Belfast. A history of the development of these structures can be found at the Peacewall Archive.