The upper house of Mexico’s federal congress, the Cámara de Senadores, meets in a building on the east side of the Museo Nacional de Arte. It’s usually in session from September to December. The Distrito Federal’s elected assembly, the Asamblea Legislativa del Distrito Federal (ALDF), uses the old Cámara de Diputados building around the corner at Donceles and Allende. The Cámara de Diputados itself, the lower house of the federal congress, now uses the modern Palacio Legislativo on Av Congreso de la Unión, about 2km east of the Zócalo. It, too, is in session from September to December.