![North Coaling Dock Ruins and swimming area. Dry Tortugas National Park, off of Key West, Florida, USA Stock Photo - Alamy North Coaling Dock Ruins and swimming area. Dry Tortugas National Park, off of Key West, Florida, USA Stock Photo - Alamy](https://c8.alamy.com/comp/2H9AA5K/north-coaling-dock-ruins-and-swimming-area-dry-tortugas-national-park-off-of-key-west-florida-usa-2H9AA5K.jpg)
North Coaling Dock Ruins and swimming area. Dry Tortugas National Park, off of Key West, Florida, USA Stock Photo - Alamy
![File:US Navy 050524-N-8683B-054 Aviation Machinist's Mate 2nd Class Christian Lyons Keeps an eye on the waters surrounding Fort Jefferson in the Dry Tortugas National Park off the southernmost tip of Florida.jpg - File:US Navy 050524-N-8683B-054 Aviation Machinist's Mate 2nd Class Christian Lyons Keeps an eye on the waters surrounding Fort Jefferson in the Dry Tortugas National Park off the southernmost tip of Florida.jpg -](https://upload.wikimedia.org/wikipedia/commons/3/3a/US_Navy_050524-N-8683B-054_Aviation_Machinist%27s_Mate_2nd_Class_Christian_Lyons_Keeps_an_eye_on_the_waters_surrounding_Fort_Jefferson_in_the_Dry_Tortugas_National_Park_off_the_southernmost_tip_of_Florida.jpg)
File:US Navy 050524-N-8683B-054 Aviation Machinist's Mate 2nd Class Christian Lyons Keeps an eye on the waters surrounding Fort Jefferson in the Dry Tortugas National Park off the southernmost tip of Florida.jpg -
![Fort Jefferson at Dry Tortugas National Park. Fort Jefferson was built to protect one of the most strategic deepwater anchorages in North America Stock Photo - Alamy Fort Jefferson at Dry Tortugas National Park. Fort Jefferson was built to protect one of the most strategic deepwater anchorages in North America Stock Photo - Alamy](https://c8.alamy.com/comp/KJ7FCE/fort-jefferson-at-dry-tortugas-national-park-fort-jefferson-was-built-KJ7FCE.jpg)
Fort Jefferson at Dry Tortugas National Park. Fort Jefferson was built to protect one of the most strategic deepwater anchorages in North America Stock Photo - Alamy
![Fort exterior from the parapet. North Coaling Dock Ruins and swimming area. Dry Tortugas National Park, off of Key West, Florida, USA Stock Photo - Alamy Fort exterior from the parapet. North Coaling Dock Ruins and swimming area. Dry Tortugas National Park, off of Key West, Florida, USA Stock Photo - Alamy](https://c8.alamy.com/comp/2H99NYM/fort-exterior-from-the-parapet-north-coaling-dock-ruins-and-swimming-area-dry-tortugas-national-park-off-of-key-west-florida-usa-2H99NYM.jpg)
Fort exterior from the parapet. North Coaling Dock Ruins and swimming area. Dry Tortugas National Park, off of Key West, Florida, USA Stock Photo - Alamy
![Cayman Islands Photographer on Instagram: “19° 30' N, 80° 30' W “LAS TORTUGAS” Est. 1503 ~ HAPPY DISCOVERY DAY CAYMAN! #autoritratto • • #caymanislands #grandcayman #discoveryday…” Cayman Islands Photographer on Instagram: “19° 30' N, 80° 30' W “LAS TORTUGAS” Est. 1503 ~ HAPPY DISCOVERY DAY CAYMAN! #autoritratto • • #caymanislands #grandcayman #discoveryday…”](https://i.pinimg.com/originals/ea/b0/29/eab0296fed4cdba71a736d68d32ed6f8.jpg)