The ancient Mayans built sprawling civic and religious centers throughout the Yucatan and Central America. You could spend your entire honeymoon history-hopping, but be sure to put Caracol, the largest Mayan city in Belize and once home to nearly 200,000 people, on your list. Among the square-mile site’s plazas and step pyramids, you’ll find the 140-foot Sky Palace pyramid, still the country’s tallest structure.