The Cañón de la Huasteca, in the municipality of Santa Catarina just west of Monterrey, is one of the most dramatic natural features near any major Mexican city. The canyon cuts through the Sierra de las Mitras with walls rising up to 300 metres of vertical limestone, and the road through the canyon passes through scenery that feels improbably remote given how close it is to the urban sprawl.
The canyon is accessible by car or taxi and the road through it is open to all. Rock climbers come from across Mexico and internationally to tackle the routes; hikers can explore the canyon floor on well-worn trails. A small ecological park near the entrance offers guided walks. Plan a half-day at minimum.