St. Augustine Foundation owns and maintains seven buildings and two green spaces in the historic downtown area.

Home to St. Augustine Foundation and its library, the Pan American Building was reconstructed on the original Marin-Hassett House foundation in 1965. The Foundation's library & archives are open to the public by appointment.

This building was reconstructed in 1967 to represent the tabby house that belonged to Miguel Santoyo, a member of the dragoon regiment.

The two-story masonry colonial Acosta House was reconstructed in 1976 by the Versaggi Brothers Foundation. The original coquina house was built between 1803 and 1812 by Jorge Acosta, a native of Corsica, and husband to Margarita Villalonga, born in St. Augustine of Minorcan parents. The house was replaced with brick in 1924.

Reconstructed in 1976, the original structure was built between 1815 and 1820 and was the home of Bartolome Villalonga, son of Juan Villalonga of Minorca and husband to Maria Acosta of Corsican Greek parentage.

Originally belonging to the heirs of Nicolas de Ortega, this building was reconstructed in 1967. The original structure was built around 1740.

Reconstructed in 1967, the first documented structure on this site appears on a 1765 map of St. Augustine. A 1788 map shows ownership to Matias Pons and remained in the family until 1839 when it was purchased by Peter (Pedro) Benet.

This 1965 reconstruction was built on its origianl foundation and is the fourth structure to occupy the site - the first was a wooden house, the second a tabby structure, and the third a wooden house. Sebastian de Oliveros, a sailor and native of Corsica who came to St. Augustine in 1733, purchased the lot in 1798 and built his family home made of coquina.
The Hispanic Garden was constructed in 1965 for the city's 500 year celebration. Elizabeth Towers, the only femaile on the Historic St. Augustine Preservaton Board, assembled an all female committee to bring the spanish style garden to life.

60 Cuna St.
The site of four historic structures dating back to the late 1600s, the St. Augustine Foundation purchased the vacant lot in the 1970s and installed a formal garden after the site was excavated in 2009.