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Formerly a quarry used to build the Overseas Railroad, Windley Key Fossil Reef Geological State Park allows visitors to actually walk through a fossilized coral reef full of fossils formed approximately 125,000 years ago. Guided tours of the park are available between December and April for a small fee, and visitors can take self-guided tours year round thanks to the park's five short interpretive trails.
The visitors center offers a variety of exhibits on the history of the park and the railroad, and a number of picnic tables can be found scattered throughout the quarry. Find it on a map
84900 Overseas Hwy, Islamorada, FL 33036, Phone: 305-664-2540
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