Escape Rooms and Outdoor Missions are booming: Electronic scavenger hunts, foxtrails, geocaching, or mobile phone trails are a popular leisure activity among young families or young people. Our new "Eco Missions" offer is designed to do justice to these new leisure activities. In an eco mission, the various aspects of these offers (puzzles, scavenger hunt, competition) are cleverly combined to convey scientific content in an entertaining way. Our gardens serve as an attractive setting and our researchers provide the interesting content, which is packed into exciting stories and tricky puzzles. In this way, we offer a contemporary leisure program that also highlights current research topics in the field of sustainability. The aim of the Öko Missions is to attract a completely new target group to the gardens on the Grüental campus and to raise awareness of sustainability.