The oldest masonry fort in the continental United States, the Castillo de San Marcos is a large Spanish stone fortress built to protect and defend Spain's claims in the New World. It's a National Monument and, at over 315 years old, it's the oldest structure in St. Augustine. It's also one of the main attractions in St. Augustine.
The Lightner Museum is a museum of antiquities, mostly American Gilded Age pieces, housed within the historic Hotel Alcazar building in downtown St. Augustine. This 1887 Spanish Renaissance Revival style building is listed on the National Register of Historic Places.
The St. Augustine Alligator Farm Zoological Park is one of Florida's oldest continuously running attractions, having opened on May 20, 1893. Not only does it have 24 species of crocodilians, but also a variety of other reptiles, mammals and birds, as well as exhibits, animal performances and educational demonstrations.
Anastasia State Park is a 1,600-acre state park in Florida, United States. This park has a variety of wildlife, birds and plants in a setting of beaches, tidal salt marsh, and marine and upland hammock. It is also home to the Old Spanish Coquina Quarries, an archaeological site from which the coquina stone used in the construction of the Castillo de San Marcos in St. Augustine was mined, earning it a spot on the National Register of Historic Places.