Pennekamp Coral Reef State Park is a gorgeous Florida state park on the island of Key Largo, spanning approximately 70 nautical square miles off the island's Atlantic Ocean coastline.

The park, which was the first underwater park established in the United States, is listed on the National Register of Historic Places and is intended to protect significant coral reefs throughout the south Florida region.

Visitors can explore the reefs via snorkeling and scuba diving excursions or view them up-close via glass-bottom boating tours offered by the park throughout the year.

The park's visitor center is home to a 30,000-gallon saltwater aquarium, along with a wide variety of natural history exhibits on the park's ecosystems.

Canoeing and kayaking are popular throughout the year at the park, which is also known as a top south Florida fishing destination.

Two manmade beaches are showcased at the park, including popular snorkeling site Cannon Beach and relaxing, secluded Far Beach.

102601 Overseas Hwy, Key Largo, FL 33037, Phone: 305-451-6300, Map