Created in 1924, Fort Matanzas National Monument is a United States National Monument run by the National Park Service. The Monument consists of a 1740 Spanish fort, Fort Matanzas, and about 100 acres (0.4 km²) of salt marsh and barrier islands along the Matanzas River on the northern Atlantic coast of Florida. It is operated by the Park Service in conjunction with the Castillo de San Marcos and several sites in the city of St. Augustine. When St. Augustine was burned by the British in 1702 by sailing up the Matanzas River and into the city, the Spanish realized that this inlet must be protected. Consequently, Fort Matanzas was built on Rattlesnake Island out of range of the British man of wars, but able to blast any small ship out of the water. 1924 was a leap year starting on Tuesday (link will take you to calendar). ... The National Park Service (NPS) is the United States Federal Government agency that deals with all National Parks, many National Monuments, and other conservation properties with various designations. ... This article is about marsh, a type of wetland. ... In geography, a bar is a linear shoaling landform feature within a body of water. ... Matanzas River is a body of water located in St. ... The Atlantic Ocean is Earths second-largest ocean, covering approximately one_fifth of its surface. ... State nickname: Sunshine State, Everglade State Other U.S. States Capital Tallahassee Largest city Jacksonville Governor Jeb Bush Official languages English Area 170,451 km² (22nd)  - Land 137,374 km²  - Water 30,486 km² (17. ... Castillo de San Marcos National Monument, often simply called the Castillo, is a U.S. National Monument located in St. ... Five flags have flown over St. ... A man of war (also man-of-war, man-o-war or simply man) is an armed naval vessel. ...

The Fort is accessible only by guided boat tours. Hiking trails are available on the barrier island.

For the etymology of "Matanzas" see Matanzas River. Matanzas River is a body of water located in St. ...