On the first day of the new season, the Museum Village Düppel plays host to a small seed swap fair, were visitors can learn about, swap and buy seeds of endangered and rare plants. Biodiversity is also an important topic were open air museums can make contribution. Information stalls on a Citizen Science program on documenting the wildlife of Berlin by the nature preservation foundation of Berlin and another project about growing endangered plants in your own private garden by the botanical society of Berlin invite visitors to participate in preserving our biodiversity.