Zacatecas is a silver city with drama built into its geography. The historic centre squeezes through a high, dry ravine of pink cantera stone, with church towers, steep lanes, and old mine entrances climbing toward Cerro de la Bufa. It feels tougher and less polished than Guanajuato, but just as memorable.
The city grew rich from the mines of the northern frontier, and that wealth still shows in the carved façade of the cathedral, the museums, and the grand houses around Plaza de Armas. The old Mina El Edén is now a visitor mine, while the Teleférico gives the quick visual explanation of why this city became a UNESCO World Heritage Site.
Zacatecas works well as a two-day stop on a colonial highlands route. Spend one day on the cathedral, museums, and mine; keep another for the hill, markets, and the quieter back streets where the city feels less like a set piece and more like a lived-in northern capital.