Say a prayer, bow your head and perhaps even light a candle in Sanctuary of Carmen. This majestic religious building may not be open all day, so check ahead for times if you'd like to see inside.
This principal church won't cost you a dime, which is just what you want if you're chasing free things to do. You'll find Sanctuary of Carmen in Tlalpujahua. There are loads more places to see in the vicinity, including Dos Estrella Mine and López Rayon Brothers Museum.
