The oldest masonry fort in the United States, the Castillo de San Marcos has exchanged many hands and undergone many name changes throughout the years, but has evolved into a symbol of the cultural clashes that ultimately unify the United States today. Occupying 2.5 acres (101 km²) in downtown St. Augustine, it was first constructed by the Spanish starting in 1672 in order to protect Spanish territories in the New World. Over the next 23 years, the fort was fashioned from a stone called coquina (Spanish for "little shells"), made of ancient shells that have bonded together.
Throughout the years, the fort changed hands between Spanish, British, and American owners, changing its name each time. It also played a vital role in many famous conflicts, from the Civil War to the Spanish-American War. Today, it is a site worth visiting because of its storied history and impressive stature. Walk among the 30 foot (9 m) stone walls and admire the site that was at the center of many of the greatest conflicts in the history of numerous nations.
This was a really great tour. I've done hop-on-hop-off in other cities and really like this mode of seeing the main attractions in a city when I have limited time in the area. The "guides" were very knowledgeable and interesting. The three-day special was really appreciated.
excellent-what a way to get around when you don't know where you are going-loved learning the city's history and the conveniency of being able to get on and off when ever we wanted for 3 days @ one great price
The monument is located right in downtown St. Augustine.