Castillo San Cristobal

Built from 1634 until 1765, for centuries the Castillo San Cristóbal has been standing guard at the eastern gate of Old San Juan. The imposing fortress was built to guard the city against enemies approaching by land, serving as a counterpart to Castillo San Felipe del Morro. The citadel covers over 27 acres and is the largest one made by the Spaniards in the New World. The vast esplanade is a great place to explore around and enjoy the beautiful view of Old San Juan.