On the Caribbean coast of Central America, Belize is an adventurer’s playground. Divers will delight in the Mesoamerican Reef, a protected underwater ecosystem teeming with hundreds of friendly fish species, colorful coral formations, and crystal-blue water as clear as a swimming pool. The Placencia Peninsula, meanwhile, offers miles of secluded soft-sand beaches flanked by bars and restaurants. November and December are ideal travel times since they’re at the peak of the dry season and just before the crowds rush in.