The Open Gardens are a joint event series of the two non-profit associations "Initiative Offene GĂ€rten Berlin - Brandenburg" (INOG) and "Urania 'Wilhelm Foerster' Potsdam e.V." Rietzer Berg will also open its doors again in 2022 and invites everyone interested to come and see the garden, pet donkeys and listen to the concerts that start at around 2 pm on each opening day.
The visitor badge for the annual program of the Open Gardens costs a one-time fee of 3 EUR per person and entitles the holder to enter the gardens on all dates of the annual program.
As a side note: the mosquitos feel as much welcome as humans here. So remember to protect yourself against them when visiting the landscape park.
More information about the Open Gardens: https://offene-gÀrten.de
More information about the Urania: www.urania-potsdam.de