How to make a work of art invisible

This month, the French artist Edgar Sarin opens two shows in Europe that deal with invisibility and performance. In Berlin, Sarin will unearth 13 coffers buried months earlier in the Grunewald forest and carry them to the Konrad Fischer Galerie, where he will present them during the opening. At the Collge des Bernardins in Paris, he will install a group of sculptures, some also recently unearthed, that inspire weekly closed-door sessions with a group of participants for the duration of the show.