Germany: Otzberg Castle

Last Thursday I got four postcards: two from Germany, one from France and one from the Åland Islands.

One of the cards from Germany shows an old painting of Otzberg Castle. Otzberg Castle was first mentioned in 1231. Between 1985 and 2019 the castle housed a museum, where this painting was shown as copy.

Stamp:
Endangered German Whale Species - Porpoise (issued 02-01-2019)

Thank You very much Martin!