Fort Zachary Taylor and the Beach the Locals Keep

The best beach in Key West is inside a state park named after a president nobody remembers, and the locals like it that way. Fort Zachary Taylor Historic State Park sits at the southwestern tip of the island, past Truman Annex, and the entrance fee ($6 per car, $2.50 if you walk or bike) is a filter that keeps the Duval Street crowd at the public beaches where they belong.

The beach is narrow, backed by Australian pines and sea grape, and the water is the clearest in Key West because it faces the open Gulf and the reef system keeps the sand from churning. The snorkeling off the rock jetty at the north end is the best on the island — no boat required, just walk in with a mask and within ten feet you're watching parrotfish and sergeant majors working the rocks.

The fort itself is a Civil War-era brick fortification that was never attacked and is now a massive, moody ruin you can explore. The casemates are cool and dark, the gun emplacements face the shipping channel with an obsolete menace, and the thick walls block the wind and the sound of the beach and create a silence that feels borrowed from another century. It's the kind of place where you half expect to hear a bugle call.

Best time: Late afternoon, when the tour groups have left the fort and the beach crowd thins. Sunset from the west-facing shore is better than Mallory Square — the same sun, less crowd, no guy juggling chainsaws. Bring a cooler (there's a concession stand, but the prices suggest the Civil War never really ended), reef shoes for the rocky entry, and a snorkel for the jetty.