Inland, the compact grid of hilly, narrow streets, with their colorful houses and elegant wrought-iron balconies, represents one of the oldest and best-preserved town centers in the Western Hemisphere. Two historic houses of worship bookend the center Plaza de Armas square: in the north, the simple white exterior of the San José Church and the comparative grandeur of the older Cathedral of San Juan Bautista, built in 1521, in the south. The latter contains the tomb of Spanish explorer Juan Ponce de León. The area is also home to Alcaldia (City Hall); El Arsenal, a former Spanish naval station; and La Rogativa, a bronze monument that tells the legendary story of the city's governor and his "rogativa," or plea to God, to save the city from British troops.
Old San Juan is connected to the rest of the city via a bridge. Buses stop just outside the historic center, which is best navigated on foot.