The Union Building (Clădirea Union) is a historic monument and former hotel in central Bucharest. The building is located near Revolution Square, on the corner of Strada Ion Câmpineanu and Strada Academei.
The building was constructed between 1932 and 1934 on the site of the former Union Inn. The architect was Arghir Culina who designed the building in an American Art Deco architectural style with some Neo-Romanian influences. The building initially housed Hotel Union, which was nationalized in 1950 and reopened as a state hotel with the same name.
In the 1960s the building was transformed into a business center and in the 1990s into a commercial office center called the Union International Center. Multiple tenants rent office spaces in the building and the ground floor houses several shops.
