While theater performances animate and bring objects to life on stage, museums transform objects into lifeless museum pieces. In the series Grassi invites #3: Masken! the GRASSI Museum of Ethnology invites theater producers to reactivate and re-examine the many masks of the museum. The aim is to create a "world theater of masks." The presentation of masks, the reversal of roles and the immersion into other personalities is a worldwide phenomenon. Masks disguise people and transform them into other beings: spirits, ancestors, gods, mythical figures, animals as well as superheroes or bank robbers. They also offer anonymity and create fear in people. The occasion and use of masks are just as diverse as the characters they represent: as theater and carnival masks, masks that embody ancestors or are worn during initiations, as well as death or protective masks.