San Juan's Unmissable Essentials

San Juan’s historic core features massive 16th-century Spanish fortifications like Castillo San Felipe del Morro and Castillo San Cristóbal, both UNESCO World Heritage sites. The blue-cobbled streets of Old San Juan lead to the Cathedral of San Juan Bautista, the second oldest cathedral in the Americas, and La Fortaleza, the oldest executive mansion in continuous use. Visitors can walk along the 19th-century Paseo de la Princesa, pass through the historic San Juan Gate, and explore the colonial-era Santa María Magdalena de Pazzis Cemetery overlooking the Atlantic.