There are many of them! Probably 12 of them are considered main tourist attractions and in different states of repair and restoration. The main sites are Caracol, Cerros, Lamanai, Actun, Tunichil Muknal and Altun Ha. If you are looking for the Indiana Jones vibe, a lot of these ruins are set in the jungle which only adds to the sense of adventure!
Caracol is situated amid the jungle in the Chiquibul National park and you simply cannot avoid the "Raiders of the lost ark" vibe as you enter this majestic Mayan ruin. It is the largest Mayan ruin in Belize and happily untouched with limited excavation and reconstruction, emitting the energy and experience of what it would have been like back in the day. In typical fashion, the ruins are amok with tombs, Mayan walls, and reservoirs and contains temples that are even higher than Tikal in neighbouring Guatemala.
The orange walk is in the north of Belize and is famous for its native mix of cultures where the creoles and the Mennonites alike have made their home. It is also the perfect stop-off point when entering Belize from Mexico and visiting the nearby ruins of Lamanai and Altun Ha. The Shipstern national reserve and The Crooked tree wildlife sanctuary are perfect for nature lovers and protect a diverse range of important natural habitats and wildlife species.
Actun Tunichil Muknal Cave, also known as the ATM, is an ancient Maya ceremonial Belize cave rich in both history and artefacts. It was perhaps the most important of sacred Belize caves, one in which the ancient Maya conducted elaborate ceremonies to appease their gods. Wade along a shallow underground river before scaling ladders that lead to sacrificial altars still surrounded by jade axe heads, pottery and blood letting implements. Deeper into the cave, you can appreciate skulls and skeletons of sacrificial victims amongst the stalagmites. Definitely reminiscent of Raiders of the lost Ark!