A day in Nice takes a chilling turn when you spot seven ghostly figures drifting from the sea toward the Monument Centenaire. Their regal posture hides a silent plea for help, and you are the only one who can see them.

This self-guided outdoor mystery game takes you through 12 real Nice locations. Download the free Questo app, start at the Centenary Monument on Promenade des Anglais, and begin anytime. No guide, no booking required.

The ghosts are no ordinary strangers: walking beside you through Nice's Old Town and along the Promenade are Friedrich Nietzsche, Henri Matisse, Oscar Wilde, Thomas Jefferson, Anton Chekhov, James Joyce, and Frank Harris. Seven brilliant men with unfinished business in this city on the French Riviera.

Follow cryptic clues, solve real-world puzzles, and piece together a mystery lost to time. Someone summoned these men. Someone wanted them to feel what it means to lose control. Part detective story, part history lesson, entirely unforgettable.