On the east coast of the Yucatan Peninsula, in the Mexican state of Quintana Roo, lies the ancient Mayan city of Tulum. Built in the post-Classical era (from around 1200 to 1450), Tulum was occupied until the late 1500s. Today the site is a major tourist attraction on the so-called Riviera Maya.
Wikipedia has more information available. The area has definitely been developed for tourism, so parking and trails are present, as well as numerous potential guides if desired.
Visit Instructions: To log your visit to this Waymark, post a picture of your GPSr next to the artifact. Post a second, wider picture to show the "Ancient Evidence" in context.