The historic Grand Palais in Paris has announced that it’s hosting an art scavenger hunt in collaboration with Perrotin Gallery, and if you’re lucky you could get your hands on a free Takashi Murakami artwork.

The project, titled “Wanted!”, is set to take place over 48 hours next weekend (October 24 to October 25) and participation will be free of charge. Hidden alongside the Murakami artwork will be 19 others from artists also represented by Perrotin, including Daniel Arsham, Emily Mae Smith, and JR.

“The rules are simple,” reads a post on the gallery’s Instagram page: “20 artworks by Perrotin artists will be concealed in the empty nave of the Grand Palais. If you find one, you leave with it.”

In a statement, Emmanuel Perrotin tells The Art Newspaper: “I am hugely grateful to my artists for their commitment and belief in this wild project. This is a rare moment. I love the idea of doing this as a gift to the city of Paris, as a moment of solidarity and joy.”

Perrotin adds that he visited the Grand Palais empty to consider the space for a project with Maurizio Cattelan (the artist behind the infamous $120,000 banana at Art Basel) seven years ago. “During this visit, I happened to ask how much it cost to rent the Grand Palais,” he says. “Ever since, I have kept this idea in my mind.”

Check out the announcement of “Wanted!” below.