Pigeon Key

MARATHON, Florida Keys — About two miles west of Marathon, nestled beneath what is now called the Old Seven Mile Bridge, lies Pigeon Key. The five-acre island once served as a base camp for workers during construction of the original Seven Mile Bridge, the centerpiece of Henry Flagler’s Over-Sea Railway. A museum on the island chronicles the construction of the railorad. Accessible by ferry, Pigeon Key also welcomes many visitors who walk or bike to it along a scenic portion of the Old Seven Mile Bridge, closed to vehicular traffic since 2007. (Photo by Andy Newman/Florida Keys News Bureau)