Several Central Ministries, namely Public Service Division of the Prime Minister's Office, Ministries of Finance, Law and Trade & Industry and their departments are located at The Treasury, 100 High Street.
The Treasury is sited on a 0.6 hectare plot next to Funan Centre, fronting High Street and about 500m away from the City Hall MRT Station. The building is 11 storeys high with close to 22,500 sq. m of usable floor area.

Situated in the heart of the Civic and Cultural District, the building is part of the civic district of government offices stretching from the Padang to the foot of Fort Canning Hill.

The building is designed by former PWD. It retains the stateliness of an old building and yet captures the contemporary image of modern buildings. The entrance and concourse give the building a civic character. The lower floors of the building have tall granite-clad columns reflecting the proportions of those at City Hall while the higher floors of the building are cladded with a glass and aluminium curtain wall. Two tall round cores mark the entrance and provide a feeling of solidarity.

A key feature of the building is its shared facilities, to optimise the use of resources. The facilities include a 170-seat Auditorium and several Conference Rooms; a Fitness Room and a multi-purpose Function Room. There is also a roof-top garden. A restaurant and a shop are located at the ground level.

The Treasury caters to the requirements of a modern office, with intelligent features incorporated in the lift system, building energy management system, office automation system and security system. Smart cards are used for purposes such as office access.