Visitors join a guided walk through the outdoor grounds of the Botanical Garden, moving into the greenhouses if it rains, to see seasonal plant highlights. The tour lasts 90 minutes, is held in German, and suits teenagers aged 10 and up as well as adults. Booking is required, and the group meets at the Visitor Centre, entrance Königin-Luise-Platz.

Details can change — check the event’s website before you go.