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During its heyday (1600s), Jamaica's Port Royal was the richest and wickedest city in the Caribbean. Chief among its defenses: Fort Charles.

Like the continued coexistence of the Dutch and French in SXM, the combination of Dutch and Spanish styles in Fort Amsterdam make it unique.

If you're visiting Fort Jeffereson on a day trip, you'll want to leave time for beachcombing, snorkeling, and a stroll atop the Fort Jefferson seawalls. 

Garita del Diablo (Devil's Sentry Box) at Castillo San Cristóbal in Old San Juan has been off limits for hundreds of years. There's a haunted reason why...

You simply cannot tell the history of the Virgin Islands without Fort Christian. Its doors opened 339 years ago, making it the oldest structure in the USVI.

You can't sail into the Bay of Fort-de-France from the south without passing Ilet-Ramier. Once you see it, though, you may not want to keep going at all.

Martello Tower Barbuda dates back to the early 1800s. It's said to be the oldest such tower in the Caribbean. It's also the island's strongest structure.

The ultimate lookout in Les Saintes, La Tour Modèle was built in 1843 to protect French interests in Terre-de-Haut and its sister islets.

From the street just outside Cisca's Delicacy, Fort Louis stood stoically above Marigot tempting exploration.