Laid out in 1559, Plaza Vieja is Havana's most architecturally eclectic square, where Cuban baroque nestles seamlessly next to Gaudí-inspired art nouveau. Originally called Plaza Nueva (New Square), it was initially used for military exercises and later served as an open-air marketplace. After a full restoration in the 1990s, the plaza today hosts its own microbrewery, the Angela Landa primary school, a beautiful fenced fountain, and some of Havana's finest vitrales (stained-glass windows). Surrounded by bars, restaurants, and cafes, it has a sociable buzz in the evenings.