Cuzco’s third most important colonial church, La Merced (%23-1821; Mantas 121; admission S6; h8am- noon & 2-5pm Mon-Sat) was destroyed in the 1650 earthquake, but was quickly rebuilt. To the left of the church, at the back of a small courtyard, is the entrance to the monastery and mu- seum. Paintings based on the life of San Pedro Nolasco, who founded the order of La Merced in Barcelona in 1218, hang on the walls of the beautiful colonial cloister. The church on the far side of the cloister (h8-11am) contains the tombs of two of the most famous conquista- dors: Diego de Almagro and Gonzalo Pizarro (brother of Francisco). Also on the far side of the cloister is a small religious museum that houses vestments rumored to have belonged to conquistador and friar Vicente de Valverde. The museum’s most famous possession is a priceless solid-gold monstrance, 1.2m high and covered with rubies, emeralds and no fewer than 1500 diamonds and 600 pearls. Ask to see it if the display room is locked.