Port Royal sits at the tip of the Palisadoes spit that encloses Kingston Harbour. In the 17th century it was one of the largest cities in the Americas — a notorious pirate haven and trading post where Henry Morgan and other buccaneers brought their plunder. In 1692 a massive earthquake dropped much of the city into the harbour, killing thousands instantly. The sunken city and its cargo are still down there.
What remains is a small, historically rich village with Fort Charles — Jamaica's oldest standing fort, built in 1655 — and the Giddy House, a former artillery store that tilted 45 degrees in the 1907 earthquake and stayed that way. The underwater ruins are protected as one of the great archaeological sites of the Caribbean. The 18th-century St Peter's Church and remains of the Royal Navy Dockyard complete the historic core, and a short boat ride takes you to Lime Cay, a small sand cay popular for swimming.
Getting here: a ferry runs regularly from the Ocean Boulevard terminal in Kingston. The ride takes about 20 minutes and is cheap. It's an easy half-day trip from Kingston.