If traveling to Belize, I would definitely visit some of Ancient Mayan archaeological sites.

Xunantunich Maya Ruins is one of the top list.

Located near the Guatemalan border in the village of San Jose Succotz, Cayo District of Belize, Xunantunich sits atop a hill overlooking the Mopan River and the Cayo District. I'd love to climb to the top of El Castillo, the largest pyramid within the site, to see a breathtaking 360 degree panoramic view over the jungle and river valleys.