Museo de la Revolución
Housed in the former Presidential Palace of Cuba, previously decorated by Tiffany's of New York and with one of its rooms modeled after the Hall of Mirrors in Versailles, the Museo de la Revolución offers the story of the Cuban people rising up to overthrow the oppressive bourgeois government with tales as on the nose as, well, housing the story of the revolution in the grand palace of the president who was overthrown.
Still, the propaganda-laced story detailed in the museum, starting on the top floor and working its way back down to the ground, is often compelling, if shabbily portrayed. If you're at all interested in the history of Cuba, this is a must see.
And, last we saw, air conditioners were about to be installed, which is a plus in the Cuban heat!
If you want to learn more about the Cuban Revolution while in Cuba, you should make plans to visit Santa Clara, particularly if you're partial to Che Guevara.