El Capitolio, Havana's architectural splendour, stands as a monument to Cuba's rich history and political journey. Completed in 1929, this majestic building combines neoclassical and art deco elements, reminiscent of the American Capitol yet strikingly unique. It was once the seat of the Cuban Congress and later the home of the Cuban Academy of Sciences. Today, its resplendent dome, brilliant marble work, and intricate designs captivate visitors with tales of old Havana. Keep an eye out for the 25-carat diamond encased within, a replica of the original gem used to measure the distance from Havana to all parts of the island.