Abandoned before completion by the U.S. Army in 1874, the mammoth coastal citadel of Fort Jefferson still sits in which state's Dry Tortugas National Park?

Named for the sea turtles that were once abundant there, Florida's Dry Tortugas islands were once a significant shipping corridor—and also the site of hundreds of shipwrecks. Untold treasures still lie buried under its waters.

Asked by Susanna Henke · Last updated 5 years ago · 71.4K views · SOURCE