Florida Keys Cultural Road Trip: Reefs, Ruins & Hardwood Hammocks

Established in 1963 as the first undersea park in the United States — named for Miami Herald editor John Pennekamp, who spent years lobbying Congress to protect the reef from development and souvenir collectors — the park extends 70 nautical square miles from the shore into the Atlantic, encompassing one of the most biologically diverse coral reef systems in North America. The visitor center holds a 30,000-gallon living reef aquarium. The park's signature cultural landmark is the Christ of the Abyss: a 9-foot bronze statue by sculptor Guido Galletti, placed 25 feet underwater in 1965 as a duplicate of the Christo degli Abissi installed in the Mediterranean Sea near Genoa in 1954. The figure stands with arms raised toward the light filtering down from the surface — one of the most photographed images in Florida diving. Glass-bottom boat tours run throughout the day for non-divers.

Docked at the Holiday Inn marina in Key Largo is the actual African Queen — the 30-foot steam-powered boat used in John Huston's 1951 film starring Humphrey Bogart and Katharine Hepburn. Built in 1912 in Lytham, England, the boat worked as a supply vessel on Lake Albert in what is now Uganda before the film brought it international fame and Bogart his only Academy Award. After decades of ownership changes and serious deterioration, it was restored and has been moored in Key Largo since 1982. Narrated steam-powered cruises are available, making it one of the more surreal experiences in the Keys — chugging through the mangroves on a 114-year-old vessel made famous by two of Hollywood's greatest actors.

Established in 1946 in a natural saltwater lagoon created by Overseas Highway blasting, Theater of the Sea is the oldest marine mammal facility in the world. Unlike modern marine parks with their artificial pools and corporate ownership, Theater of the Sea operates in a genuine Keys environment: the lagoon connects to open water, the dolphins and sea lions swim in natural salt water, and the facility has never expanded beyond its original footprint. The result is an experience that feels like stepping back into mid-20th-century Florida — intimate, slightly ramshackle, and strangely moving.

Lignumvitae Key is accessible only by boat — a fact that has preserved it as the finest surviving example of a virgin tropical hardwood hammock in the Florida Keys. The 280-acre island's interior forest has never been cleared, logged, or farmed; its canopy of gumbo limbo, mastic, poisonwood, and the rare lignumvitae tree (the 'wood of life,' so dense it sinks in water) has grown undisturbed since before European contact. The 1919 Matheson House at the island's center was built by chemical magnate William Matheson as a winter retreat using Keys limestone and rainwater cisterns; it stands today with original furnishings, a windmill that pumped water, and a Delco plant that provided electricity — luxuries in the roadless backcountry of 1919. Boat tours from Robbie's Marina at MM 77.5 depart at 10am and 2pm Thursday through Monday; kayaking independently is also permitted with a Florida State Parks pass.

Craft beers brewed with Keys ingredients — mango IPA, Key lime wheat — on a bayfront deck with the backcountry spreading behind the mangroves. The sunset from here, looking west over Florida Bay, is reliably spectacular.

Crane Point is a 63-acre nature preserve and museum in Marathon that protects one of the best remaining examples of West Indian hardwood hammock in the Keys, along with an extraordinary archaeological and historical record of human habitation. The 1903 Adderley House — built by Bahamian immigrant George Adderley using limestone blocks hewn by hand from the surrounding hammock — is the oldest house in the Florida Keys outside of Key West, and its ruins are preserved in the preserve exactly where they stand. The museum's exhibits trace 2,500 years of Keys prehistory including Calusa and Tequesta settlements, Spanish colonial contact, and the Bahamian Conch community that built much of the Keys infrastructure before Flagler's railroad arrived. Trails through the hammock pass a rare freshwater blue hole, a tidal mangrove creek, and a restored native butterfly garden.

Pigeon Key is a 5-acre island beneath the old Seven Mile Bridge that served as the construction and maintenance camp for Henry Flagler's Overseas Railroad — one of the most audacious engineering projects in American history. Beginning in 1908, thousands of workers (many of them recent immigrants) lived on this tiny island while building the original Seven Mile Bridge across open water connecting Marathon to the Lower Keys. Five of the original 1908 wooden buildings survive: the workers' quarters, the section foreman's house, the bridge tender's house, the assistant bridge tender's house, and the rainbow cottage built for Flagler himself when he came to inspect progress. After the railroad was destroyed by the Labor Day Hurricane of 1935, the camp served as a maintenance facility for the Overseas Highway that followed. Access is by ferry from the Knight's Key Visitor Center or by walking the old bridge from Marathon. The site is listed on the National Register of Historic Places.