Completed in 1521, Casa Blanca was built for the explorer Ponce de Leon, who died before construction was finished. Generations of his heirs lived in the home, and today the estate houses a museum that concentrates on daily life in San Juan from the 1500s to the present. Open Tuesday-Saturday 8:30 am-noon and 1-4 pm. US$3 adults, US$2 children. 1 Calle San Sebastian, Old San Juan, San Juan. Phone 787-725-1454.
