Belize is about the size of Massachusetts, yet it packs in more variety than countries many times larger. In one trip you can dive a world-famous barrier reef, then climb ancient Maya temples rising out of the jungle. Its people and culture are just as rich a mix as its landscapes.

For years, Belize lived in the shadow of its famous neighbors, Cancun, Cozumel and Tulum. Now travelers are discovering what they were missing: thatched-roof jungle lodges, quiet snorkel and dive spots, impressive Maya ruins and an easygoing pace. Tucked between Mexico and Guatemala, the country faces the Caribbean on the east, with wild rainforest covering the north, west and south. Offshore, hundreds of small cayes and atolls offer swaying palms and clear blue water.

Ambergris Caye, the largest island, is the most popular base, with relaxed beach days and a fun nightlife scene after dark. Don't skip the mainland, though. Some of Belize's best moments are inland. I'll design a split stay, jungle and reef, with the short flights and transfers between them taken care of.