Skip to main content

Castillo de San Marcos National Monument


The Castillo de San Marcos has guarded St. Augustine for over 325 years.  The coquina stone structure took 23 years to build (1672-1695) and would see service until the turn of the 20th Century.  The fort would be under the command of four different countries, but it was never taken by military force.

Views of the exterior coquina stone walls of the fort - Doug Kerr, 2013.


The castillo would serve as the ultimate permanent replacement of nine prior wooden forts that existed in St. Augustine the century prior to the start of San Marcos' construction.  The fort was attacked twice by the British in the early 18th century, 1702 and 1739, yet the fort and the city would not be captured.  The fort would finally fall into British hands - and renamed Fort St. Mark - not by force, but by treaty in 1763.  In the Paris Treaty signed to end the Seven Years War, Britain gained Florida from the Spanish in return for Cuba and the Philippines.  A second Treaty of Paris would return Florida and the fort to the Spanish in 1784.

Interior grounds of Castillo de San Marcos

One of the many bastions of the castillo.

Spain would return the fort's name to Castillo de San Marcos and would hold the fort and Florida until 1821.  On July 20 of that year, the Spanish government would cede all of Florida to the United States.  The Americans would rename the base Fort Marion in honor of Revolutionary War General Francis Marion.   In December 1860 when Florida seceded from the Union and joined the Confederacy, Fort Marion was given to the Confederates in return for a receipt for the fort and all the contents inside.  The Union would regain the fort on March 11, 1862 after Confederate forces abandoned the fort and the citizens of St. Augustine surrendered to preserve their city.


For the remainder of the fort's operation , it served predominantly as a military prison.  Native Americans and deserters during the Spanish-American War would be imprisoned here.  In 1924, the fort was declared a National Monument, and nine years later it would be transferred to the National Park Service.  In 1942, Fort Marion was renamed Castillo de San Marcos in honor of its and the state's Spanish heritage. Today, the fort is one of the major tourist attractions in St. Augustine.

Panoramic view from Castillo de San Marcos - Tom Fearer, 2017.

All photos taken by post author - October 2011 - unless otherwise noted.

Sources & Links:
How To Get There:

Comments

Popular posts from this blog

Did Caltrans just kill the G26 cutout US Route shields?

The US Route System was formally created by the American Association of State Highway Officials during November 1926.  Through the history of the system the only state to which has elected to maintain cutout US Route shields has been California.  The G26 series cutout US Route shields have become a favorite in the road enthusiast hobby and are generally considered to be much more visually pleasing than the standard Federal Highway Administration variant.  However, the G26 shield series appears to have been killed off on January 18, 2026, when Caltrans updated their Manual of Uniform Traffic Control Devices.  This blog will examine the history of the US Route shield specifications in California and what is happening with the 2026 changes.  The blog cover photo is facing towards the terminus of California State Route 136 and at a G26-2 specification US Route 395 shield.  In the background Mount Whitney can be seen in the Sierra Nevada range.   ...

May 2023 Ontario Trip (Part 3 of 3)

  Over the years, I have made plenty of trips to Ontario, crisscrossing the southern, central and eastern parts of the province. Living in Upstate New York, it's pretty easy to visit our neighbor to the north, or is that our neighbor to the west? Ottawa is one of my favorite cities to visit anywhere in the world, plus I've discovered the charm of Kingston, the waterfalls of Hamilton (which is on the same Niagara Escarpment that brings us Niagara Falls), the sheer beauty of the Bruce Peninsula, and more. But I hadn't explored much of Cottage Country. So I decided to change that, and what better time to go than over Memorial Day weekend, when the daylight is long and I have an extra day to explore. On the third and final day of my trip, I started in Huntsville and made my way through Muskoka District and Haliburton County, passing by many lakes along the way. I stopped in towns such as Dorset, Haliburton and Bancroft before making a beeline down to Belleville and then over th...

Ghost Town Tuesday; Nichols, FL

A couple years ago I spent a lot of spare time exploring phosphate mining ghost towns in the Bone Valley of Polk County, Florida.  One ghost town in particular called Nichols on Polk County Route 676 west of Mulberry caught my eye due to a relative lack of documentation on ghosttowns.com. Nichols was created in 1905 during the early phosphate mining boom in the Bone Valley region.  For the time Nichols was unusual since it had company housing in the Nichols Mine site and private residences outside the gate.  Nichols is only about two miles west of Mulberry which probably made it a somewhat reasonable commute even by the wonky standards of the early 20th Century.  Most of the Bone Valley region was relatively remote which made commuting or homesteading impractical which is why there are so many ghost towns in the area.  The company housing section of Nichols was phased out and abandoned by 1950. The Nichols town site is largely abandoned and could "possibl...