On Parque Céspedes' northwestern corner lies the Casa de Diego Velázquez. Dating from 1522, this is the oldest house still standing in Cuba. Restored in the late 1960s, the Andalusian-style facade (you'll know it by its enclosed balcony with the fine, Moorish-style woodwork) was restored in the late 1960s, and opened in 1970 as the Museo de Ambiente Histórico Cubano.
The ground floor was originally a trading house and gold foundry, while the upstairs was where Velázquez lived. Today, rooms display period furnishings and decoration from the 16th to 19th centuries. Check the two-way screens, where you could look out without being observed: a Turkish influence (Turkey had a big influence on European style at this time). Visitors are also taken through an adjacent 19th-century neoclassical house.