Iglesia de San Francisco El Grande, Antigua

35q/$5 to enter for foreigners. Go on a weekday if you want decent photos. I recommend about 45 min here. Great if you have time to wander, it's not a must see. Most signs and info cards are in Spanish. I'd suggest if they're going to up charge foreigners, at least have more signs in English. No student discounts. Watch for tourist traps at the entrance. Follow the signs for ruin entrance. Main entrance is on the opposite end of where Google takes you. Yes there's parking for 5qs for 90 min. Drinks and snacks available for purchase.

If you only visit one church / convent / monastery in Antigua, visit this one: with a guide. You will not regret it. It has it all: ancient stories, more recent ones. Ruins, restoration, secret rooms, museum and even it's own market with Guatemalan sweets and specialties. It's literally it's own world...