La Fortaleza is a small, traditional distillery in the town of Tequila, admired by tequila people for doing things the slow way — the cooked agave is still crushed under a stone tahona. They publish no street address, so the pin is on the town.
Tours and private events are by appointment only, booked at least 36 hours ahead through their website; the distillery shop opens late morning, also by appointment. A second number is +52 374 742 0032.