The Künstler-Nekropole (Artists' Necropolis) is a small woodland cemetery in the Habichtswald above the city — a unique conceptual art project where artists design their own graves and are then buried beneath them. The site contains a couple of dozen completed works set among the trees, ranging from minimalist stone slabs to elaborate symbolic structures.
It is a quiet, slightly otherworldly place. The walk in from the nearest car park takes ten minutes through forest; an information board at the entrance lists the artists and the year of each piece. Open at all times, free, and best visited in mid-morning when the light filters through the trees. Bring proper shoes — the paths are uneven.