Book tickets online well ahead (~€26 basic adult; children under 11 free) — sells out weeks in advance. The Nativity Tower elevator (extra ~€10) gives kids a bird’s-eye view but involves a narrow staircase descent. Allow 1.5–2 hours inside; the stained glass is mesmerizing for all ages. Arrive at opening time to avoid the crush in the narrow interior corridors.

Address: Carrer de Mallorca, 401, 08013 Barcelona

Google Maps: Click here for directions

Cost: Paid $$$