One of the strangest ruins in the Yucatan of southern Mexico is the Palenque ruins. The ancient Maya built these ruins in 226 BC. Some time after 800 AD, the ruins were abandoned and lost into the central American jungle. Visitors to the site marvel at the ornately carved hieroglyphics and reliefs, some of which feature gloomy skulls and dancing warriors. The complex has multiple temples, a tall observation tower, arched hallways, the oldest pressurized aqueduct in South or North America and crumbling stairs leading up to the splendid plazas and structures. The complex may still have some moss and grass covering its stone plazas, but it is truly a beautiful example of ancient design.