Gianni Crea, the Vatican Museums chief "Clavigero" key-keeper, walks through the Sistine Chapel as he opens the museum, at the Vatican, Monday, Feb. 1, 2021. Crea is the “clavigero” of the Vatican Museums, the chief key-keeper whose job begins each morning at 5 a.m., opening the doors and turning on the lights through 7 kilometers of one of the world's greatest collections of art and antiquities. The Associated Press followed Crea on his rounds the first day the museum reopened to the public, joining him in the underground “bunker” where the 2,797 keys to the Vatican treasures are kept in wall safes overnight. (AP/Andrew Medichini)