Players will come across several locked chests during their adventure in Indiana Jones and the Great Circle. The codes needed to unlock them often hide in plain sight, but sometimes, it's not so apparent. It's up to you to scan the area in search of notes or hidden clues that will point you in the direction of the code. One of these locked chests can be found early in the game, after entering the Vatican City inside Belvedere Courtyard. This guide will explain how to open it.