Travel to the island’s opulent past with visits to architectural masterpieces of the 1930s. In the southern municipality of Ponce, the Serrallés Castle’s clay tiles and terracotta detailing exemplify Spanish Revival style. Some rooms of the castle are designed to mimic the taste of decades past, and to commemorate the Don Q rum-producing Serrallés family; others have been turned into rum-related exhibitions. Casa de España, in Old San Juan, was built in 1932 as the headquarters of a private organization for Puerto Ricans of Spanish descent. Today it is a restaurant serving authentic Spanish cuisine in evocative Moorish surroundings—check out the ornate Hall of Mirrors, the iron chandeliers, and the grand balcony overlooking the courtyard.