Legend has it that a magic formula must be repeated aloud every 100 years to guarantee the protection of the priory. Written on a parchment, it is hidden in a rose window in the heart of the museum. Your mission is to find the 7 keys scattered throughout the different rooms. You will need them to unlock the rose window to retrieve the parchment and decipher the magic formula .... Time is running out! Will you be able to meet the challenge?
