Located at the southwest corner of Plaza Bolívar is the edifice that belonged from 1637 to 1874 to the Conceptions Nuns monastery, and that from 19 April 1810 was the seat of the first congress. The southern part is the present seat of the National Assembly, and the northern part was formerly the Elliptic room, Triptic room and Shields room. It was built during the government of Antonio Guzmán Blanco.