La Fortaleza

La Fortaleza, also known as the Palacio de Santa Catalina, is the official residence and workplace of the Governor of Puerto Rico. Located in the historic quarter of Old San Juan in the capital city and municipality of San Juan, it has housed the governor since the 16th century, making it the oldest executive seat in continuous use in the New World. Built as a medieval fortress from 1533 to 1540 b... (Wikipedia)