Alligator Reef Lighthouse stands offshore from Islamorada as one of the Florida Keys' most recognizable maritime landmarks. Built to help ships navigate dangerous reef waters, it remains a favorite sight for boaters, snorkelers, and history lovers.

A Landmark With A Story

The lighthouse takes its name from the USS Alligator, a Navy schooner that ran aground on the reef in the 1800s. The structure later became part of the chain of lights that helped protect vessels moving through the Keys.

Visiting The Reef

Today the area around the lighthouse is known for clear water, marine life, and memorable snorkel trips. Conditions change quickly offshore, so go with a knowledgeable captain and respect protected reef habitats.