The center of government is the Palacio de la Revolución (Palace of the Revolution, tel. 07/879-6551), immediately south of the José Martí monument [1]. This monumental structure was inspired by the architecture then popular in Fascist Europe and was built 1954–1957 as the Palace of Justice. Today, it is where the Castro brothers and Council of Ministers work out their policies of state.
The labyrinthine, ocher-colored palace adjoins the buildings of the Central Committee of the Communist Party. Before the Revolution, the buildings served as the Cuban Supreme Court and national police headquarters. No visitors are allowed.
Links:
[1] http://www.moon.com/destinations/cuba/havana/sights-vedado-/plaza-de-la-revolucion/monumento-y-museo-jose-marti