La Fortaleza (The Fortress), San Juan (must see)

La Fortaleza, or the Fortress, is the current official residence of the Governor of Puerto Rico. Built between 1533 and 1540 to defend the harbor of San Juan, it is the oldest executive mansion in the New World. During the 1640 reconstruction, the chapel of Santa Catalina, then located outside the city walls, was demolished and integrated into the complex, which, upon that, assumed the new (current) name, Palacio de Santa Catalina.

La Fortaleza was the first defensive fortification built in San Juan, and the first of the series of military installations designed to protect the city, among which were the Fort San Felipe del Morro and Fort San Cristóbal. The construction was authorized by Charles V, the Holy Roman Emperor, as a defensive measure against the attacks from Carib Indians and the rivaling European powers.

The fortress underwent massive reconstruction in 1846 to convert from military use to a palatial residence. Since then, La Fortaleza has been the home to more than 170 governors of Puerto Rico and hosted various dignitaries, including President John F. Kennedy and his wife, Jacqueline Kennedy, who stayed here in 1961. At present, the complex consists of a few attached buildings with formal living quarters on the second floor, and private quarters on the third. The palace overlooks the high city walls fronting the bay, and its northern part contains sheltered gardens and a swimming pool.

The complex has been a UNESCO World Heritage Site since 1983 and as such may present definite interest to both history and architecture buffs with a taste for Spanish designs.