The Paris Opera House has introduced a novel visiting experience—a mystery-solving game entitled "Arsène Lupin and the Secret of the Opera". This game is offered in both French and English, although weekend sessions in English are limited and require prior reservation. Lasting approximately one and a half hours, the experience concludes with an opportunity to access the normally restricted rooftop of the Opera House, where the narrative continues. During the game, participants assume the role of a detective, unravelling the enigmatic story behind the Opera House. The entire experience comprises four distinct puzzle-solving stages that necessitate teamwork, with teams formed by two or more members. Participants are provided with a manual, a name tag, and a pen, and are invited to follow clues throughout the Opera House in search of a hidden magical stone and the secret it conceals. Although the staff and the mystery manual for the English sessions are in English, the Parisian accent may present certain challenges; nevertheless, this does not detract from the overall enjoyment and excitement of the adventure. Come to the Paris Opera House to experience this unique mystery-solving game and immerse yourself in the charm and enigma of the venue.