Queen Elizabeth: 21-Night Caribbean

Miami cruise port, officially called PortMiami, is the busiest cruise port in the world by passenger volume. Millions of people pass through here every year, and nearly every major cruise line uses it as a home port.

San Juan cruise port is one of the busiest in the Caribbean and one of the few that doubles as both a major embarkation point and a popular port of call. The port sits in Old San Juan, the historic colonial core of Puerto Rico's capital, founded by Spanish colonists in 1521.

St. John's is the capital and main cruise port of Antigua, one of the Leeward Islands in the eastern Caribbean. The Heritage Quay and Redcliffe Quay cruise terminals sit in the heart of St. John's, directly adjacent to the duty-free shopping district.

St. Lucia is one of the Caribbean's most topographically dramatic islands, defined by the twin volcanic peaks of the Pitons rising sharply from the southwestern coast. The Castries cruise port sits on the island's northwest side, with ships docking at either Pointe Seraphine (a duty-free shopping complex within walking distance of downtown Castries) or the La Place Carenage terminal on the opposite side of the harbor.

Barbados cruise port is in Bridgetown, the capital of the easternmost Caribbean island. Bridgetown Port (Deep Water Harbour) sits just outside the city's UNESCO-listed historic center, with modern terminal facilities including 21 duty-free shops, restaurants, car rental agencies, and a tourism office.

St. Maarten cruise port is one of the busiest in the Caribbean, with ships docking at the A.C.

Tortola is the largest of the British Virgin Islands, a mountainous, lush Caribbean island where Road Town serves as the capital of this British Overseas Territory. The cruise port at Road Town Pier Park handles two large ships simultaneously (up to 180,000 GT).

Miami cruise port, officially called PortMiami, is the busiest cruise port in the world by passenger volume. Millions of people pass through here every year, and nearly every major cruise line uses it as a home port.

Grand Cayman is the largest of the three Cayman Islands, a British Overseas Territory in the western Caribbean known for Seven Mile Beach, exceptional diving, and its role as a major offshore financial center. George Town serves as the cruise port, but there's no pier large enough for cruise ships.

Roatan cruise port serves one of the Bay Islands of Honduras, a Caribbean destination famous for some of the best scuba diving in the Western Hemisphere. The island sits along the Mesoamerican Barrier Reef (the world's second-largest coral reef system) about 40 miles off the Honduras mainland.

Costa Maya cruise port sits on the southern tip of Mexico's Caribbean coast, about 150 miles south of Cancun and close to the border with Belize. The port is not a city.

Cozumel cruise port is one of the busiest in the Caribbean, with multiple ships docking on the island every day during peak season. Cozumel is a flat, laid-back island off the eastern coast of Mexico's Yucatán Peninsula, and it's been a cruise staple for decades.