Intellectuals and innovators combine at Comité Central del Partido Comunista de Cuba. Ask about open days and tours for the complete experience.
You'll have no end of sightseeing choices when spending time in Plaza de la Revolucion. Comité Central del Partido Comunista de Cuba is a great place to start here, but there are loads of other interesting spots to appreciate. Hotel Nacional de Cuba, Hotel Capri, and Malecón are not far from the organization and will top off your day nicely.