1. Calle Mayor
This pedestrian artery forms the spine of the city, stretching nearly 400 meters with stone columns supporting the buildings above. It claims to be the longest street of its kind in Europe, but the real appeal is its utility; the arcades provide shelter from scorching summer sun and winter rain alike, keeping the social life of the city active regardless of the weather. The pillars themselves tell a story, with some being recycled Roman stone and others bearing traces of the Jewish quarter’s history.
Ground-floor shops and cafes spill out onto the pavement, creating a narrow but energetic corridor. You will notice distinct peepholes (judas windows) in some of the upper facades, historically used by residents to check who was knocking below without being seen. It connects the Cathedral at one end to the Plaza de Cervantes at the other, making it impossible to miss if you are walking across town.
While browsing Alcalá de Henares attractions, treat this street as your baseline for navigation. It gets tight on weekends during the evening 'paseo,' so if you want to inspect the architecture without dodging strollers and shoppers, early morning is your best bet.