Real de Catorce's Pueblo Fantasma is a captivating historical site, offering a poignant look at a former silver mining boomtown through its well-preserved ruins, abandoned churches, and old haciendas. Access to the ghost town, situated at a high altitude, often involves navigating the unique Ogarrio Tunnel and then exploring on foot, via local 4x4 vehicles ("Willys"), or horseback rides over rugged terrain. While solo exploration is feasible, hiring a local guide is highly recommended to truly appreciate the rich history, legends, and safely explore areas like old mine entrances. The dry season (October to May) is ideal for visits to avoid muddy conditions, though the area can be cool; avoid peak national holidays if you prefer fewer crowds. Expect costs for transport (shuttles, 4x4s, horses ranging from $15-$50 USD) and guide services (approx. $30-$70 USD for a half-day tour), with a typical visit duration for the ghost town itself being 3-5 hours, often part of a 1-2 day stay in Real de Catorce. Remember to wear sturdy shoes, dress in layers, and be aware of the altitude.