This guide details how to locate and unlock the safe in the Museum Wing Storage Room within the Vatican City section of Indiana Jones and The Great Circle.
The Museum Wing Storage Room is situated between the Belvedere Courtyard and the Pharmacy in Vatican City. Proceed right from the Belvedere Courtyard; you'll find a gate leading into the Museum Wing courtyard. Continue through the courtyard until you reach an open door at its end. This door leads directly to the storage room containing the locked safe.
Unlike many safes requiring a code found on a note, the code for this safe is cleverly concealed. Upon entering the storage room, you'll see the safe in the center. To the left, you'll notice a lit green lamp resting on a crate. Switch off this lamp. This action reveals the safe combination, written in pink, on the wooden crates: 7171.
Enter this code (7171) into the safe's keypad to unlock it. Inside, you'll find the Drinking Horn artifact, adding to your Lost Artifacts of Europe collection.

This completes the guide on unlocking the Museum Wing Storage Room safe in Indiana Jones and The Great Circle.