Marker Logo
THE HISTORICAL
MARKER DATABASE
“Bite-Size Bits of Local, National, and Global History”
Key West in Monroe County, Florida — The American South (South Atlantic)
 

Gateway to the Gulf

Fort Jefferson

— Dry Tortugas National Park —

 
 
Gateway to the Gulf Marker image. Click for full size.
Photographed by Brandon D Cross, May 4, 2023
1. Gateway to the Gulf Marker
Inscription. The Dry Tortugas keys sit at the crossroads of biologically rich sea currents, migratory bird routes, and strategic shipping lanes that link the eastern United States with Gulf Coast ports like New Orleans, Mobile, and Pensacola. From tiny coral polyps and small songbirds to large sea turtles and a massive 1800s fortification, this national park protects an array of America's natural and historic treasures at the gateway to the Gulf of Mexico.

A naval force designed to control the navigation of the Gulf could not desire a better position than Key West or the Tortugas.
Commodore John Roger, Report of July 3, 1829

(captions)
Thousands of songbirds, seabirds, stop in the Dry Tortugas to rest as they migrate between the Northern and Southern hemispheres.

The Dry Tortugas provided the US military with a deepwater anchorage and a site for a fort to protect the mainland and shipping lanes linking the Gulf Coast, Caribbean, and Atlantic ports. Fort Jefferson, begun in 1846 and never finished, remained a Union fortification during the Civil War.

The park’s reefs—among the most vibrant in the Florida Keys—consist of over 75 species of hard and soft corals. Over 98% of this 100-square mile park is open ocean.

 
Erected by National
Paid Advertisement
Click or scan to see
this page online
Park Service, U.S. Department of the Interior.
 
Topics. This historical marker is listed in these topic lists: EnvironmentForts and CastlesParks & Recreational AreasWaterways & Vessels. A significant historical year for this entry is 1846.
 
Location. 24° 37.641′ N, 82° 52.334′ W. Marker is in Key West, Florida, in Monroe County. It can be reached from Fort Jefferson - Key West. This marker is located within Fort Jefferson, Dry Tortugas National Park. Touch for map. Marker is in this post office area: Key West FL 33040, United States of America. Touch for directions.

Regionally, this marker is on the Florida Keys. It is also in the American South and on the Gulf Coast. Globally, it is in the North Atlantic Region, North America, a Gulf of Mexico state, the Western Hemisphere, the Western World, and the Anglosphere. Historically, it finds itself in what was once New Spain, the territory of the Mississippian Culture, one of the Confederate States of America, and the Antebellum South.

Other nearby markers. At least 8 other markers are within walking distance of this marker: How Do You Live Out Here?
Gateway to the Gulf Marker image. Click for full size.
Photographed by Brandon D Cross, May 4, 2023
2. Gateway to the Gulf Marker
(here, next to this marker); Dr. Mudd's Cell (within shouting distance of this marker); Deadly Crossfire (within shouting distance of this marker); Touring Fort Jefferson (within shouting distance of this marker); The Dry Tortugas, Home to a Myriad of Life (about 300 feet away, measured in a direct line); Water in "Dry" Tortugas (about 300 feet away); Makeshift Living Quarters (about 300 feet away); Gunrooms (about 300 feet away). Touch for a list and map of all markers in Key West.
 
Also see . . .  Dry Tortugas National Park. (Submitted on June 17, 2023, by Brandon D Cross of Flagler Beach, Florida.)
 
Gateway to the Gulf Marker image. Click for full size.
Photographed by Brandon D Cross, May 4, 2023
3. Gateway to the Gulf Marker
 
 
Credits. This page was last revised on January 14, 2026. It was originally submitted on June 17, 2023, by Brandon D Cross of Flagler Beach, Florida. This page has been viewed 264 times since then and 22 times this year. Photos:   1, 2, 3. submitted on June 17, 2023, by Brandon D Cross of Flagler Beach, Florida. • Bernard Fisher was the editor who published this page.
m=226169

CeraNet Cloud Computing sponsors the Historical Marker Database.
This website earns income from purchases you make after using our links to Amazon.com. We appreciate your support.
Paid Advertisement
Jul. 17, 2026