Casa Blanca (San Juan)

During conflicts with the Taíno, it provided refuge, and was the venue for negotiations between the conquistadores and a commission of caciques (chieftains) facilitated a resolution to a brief uprising[1][citation needed].

When the capital transitioned to the San Juan Islet in 1521, Casa Blanca became the first governor's residence in Puerto Rico.

Subsequently, Casa Blanca housed various military and chivalry organizations before gradually falling into disuse post-World War II.

It was rejuvenated by the Puerto Rican Institute of Culture, and its gardens, planted by General Brooks (the first American Military governor of the island in the 20th century), were preserved.

It was documented in the Historic American Buildings Survey in 1981 and currently operates as a museum showcasing 16th and 17th-century artifacts, administered by the Institute of Puerto Rican Culture.