Kossuth Lajos Square, also known as Kossuth Square, is a city square situated in the Lipótváros neighbourhood of Budapest, Hungary, on the bank of the Danube. Its most notable landmark is the Hungarian Parliament Building. There is a station of the M2 (East-West) line of the Budapest Metro on the square as well as a stop for the scenic Tram No. 2.

The Hungarian Parliament Building, also known as the Parliament of Budapest after its location, is the seat of the National Assembly of Hungary, a notable landmark of Hungary, and a popular tourist destination in Budapest. It is situated on Kossuth Square in the Pest side of the city, on the eastern bank of the Danube. It was designed by Hungarian architect Imre Steindl in neo-Gothic style and opened in 1902. It has been the largest building in Hungary since its completion. The architectural style of the Hungarian parliament building was influenced by the gothic Vienna City Hall, the renaissance elements like the cupola was influenced by the Maria vom Siege church in Vienna.