Basilica of the National Vow (La Basílica del Voto Nacional)

Worth it if you're into architecture and don't mind a climb—it's free to wander round, though most people fork out for guided tours to make sense of it all. With 4,900+ reviews at nearly 5 stars, you're looking at something genuinely well-liked, though whether you need to pay for one of those 100 experiences depends on whether you can appreciate a big basilica solo.

Written by us from the live data above — never copied from anywhere. Ratings and counts update from Viator.