If you start to research a trip to Tulum, one of the first set of images that will appear are of the ruins right outside of the city. These are especially striking because they are built right next to the ocean. It's a very beautiful site. Back in the prime of the Mayan empire, the Yucatan held a population of millions of people who built cities, roads (there is a 70km road from Coba to Chichen Itza!), had expansive trade routes, and diligently recorded their history (which was quickly destroyed by Cortez and his posey). Walking through this ghost town felt like an incredible privilege and we wondered what assumptions would be made by the next civilization who finds our ruins.