In a country as young as the United States, travelers hungry for history often prioritize flights to Europe over exploring their own country. However, a trip to explore Castillo de San Marcos in historic St. Augustine, Florida, is a great way to experience European vibes without having to cross the Atlantic. This article serves as your complete guide to visiting the fort and making the most out of your time in St. Augustine.
What is Castillo de San Marcos?

Castillo de San Marco is easily one of the most visited attractions in St. Augustine, FL. Completed in 1695, it’s the oldest masonry fort in the continental United States. Settlers from the Spanish empire, which spanned parts of Mexico, Central America, and South America, created the fort to protect both the city and the strategic port from invasions from British forces and pirates.
The fort primarily consists of a shell limestone called coquina. It features impressive thick walls that have withstood the test of time, colonization, and many conflicts. Today, the fort is part of the National Park Service and serves as a national monument that allows visitors to get up close and personal with St. Augustine’s history.
The Siege of St. Augustine and the Fort’s Role
The Siege of St. Augustine, which took place in 1740 amidst the War of Jenkins’ Ear, was a pivotal moment in the fort’s history. British forces aimed to capture St. Augustine and weaken Spanish influence in the region. The siege lasted nearly two months and placed Castillo de San Marcos at the heart of the conflict.
The fort played an important role in withstanding British bombardment. Despite several attempts to breach the fort, the Spanish military held their ground. Ultimately, the siege ended without a definitive victory for the British and cemented the fort’s impressive defensive reputation.
How Castillo de San Marcos Became Fort Marion
After the United States acquired Florida from Spain in 1821, the fort underwent a significant transformation. In 1825, they renamed it Fort Marion to honor General Francis Marion, a hero of the American Revolutionary War, and recognize the growing American presence.
The change marked a new era for the fortress, which began serving the U.S. military in various roles, including as a military prison during the Spanish-American War and housing Confederate troops during the Civil War. As the fort continued its military service, people increasingly recognized its historical importance, leading to its designation as Castillo de San Marcos National Monument in 1924.
A Note on the Fort’s Architecture
Part of what makes Castillo de San Marcos so impressive is its architectural design. The design features triangular-shaped structures called bastions. The result of these bastions is a star-like appearance with 30-foot-high walls that gave the fort a formidable and impenetrable look with its coquina walls.
How to Visit Castillo de San Marcos

Whether you are a history buff, an architecture nerd, or simply in search of a scenic spot, this remarkable fort offers an array of attractions and activities for visitors of all ages. The following breaks down everything you need to consider for your visit.
Tickets and Tours
When planning a visit to Castillo de San Marco, you have several options for tickets and tours:
General Admission:
$15 and good for seven days.
Provides access to the fort and its grounds.
Includes free entry for children aged 15 and under.
Note: Interagency Passes are recognized.
Self-Guided Tours:
Included with admission
Access the guided tour map here.
Special Events:
Various workshops and living history demonstrations with period dress are offered throughout the year.
Typically, special events require pre-registration and may have a separate fee.
Note: Check the official National Park Service website for the most current pricing and availability.
Public Transportation and Parking
Getting to Castillo de San Marcos is simple and conveienent. St. Augustine’s local bus service, the Sunshine Bus Company, offers routes that connect key areas to the historic district, making it easy to reach the fort without needing a car. The most common bus stop for visitors is the “San Marco Visitor Center,” which is just minutes away from the fort. Many people use rideshare services like Uber and Lyft in the area.
Parking is accessible but expect limited spaces during the peak season from June through August. Several nearby parking lots and street parking options are available, with fees that vary depending on the location and duration of your stay. We encourage visitors to arrive early to secure a spot, especially on weekends and holidays, as the area can become quite busy.
Accessibility Features
The fort’s age limits wheelchair access to certain areas. For example, you can only reach the Gun Deck via stairs. However, the National Park Service is continually working to improve these conditions and make the fort accessible to everyone. The following areas are currently wheelchair accessible:
The fort’s lower-level fort rooms
Theater
Bookstore
Restrooms
Parking lot
Additionally, sign language interpreters are available upon request at least three weeks in advance. Braille versions of the park brochure are also available at the entrance station. For more information on accessibility at Castillo de San Marcos, consult the National Park Service website or speak with a park ranger during your visit.
