"Right outside the town of Teuchitlán, Jalisco—about an hour west of Guadalajara—is one of western Mexico’s most impressive archeological sites. Discovered in 1969, Los Guachimontones includes a series of unusual conical pyramid structures, built around 2,000 years ago by the relatively unknown Teuchitlán people. The largest pyramid is nearly 60 feet high, with 52 steps to the top. You can visit this UNESCO World Heritage Site for free but the on-site museum charges a small fee."