Last Thursday I got two postcards from Germany.
One of them shows Friedenstein Castle in Gotha. Friedenstein Castle is Germany's first Baroque castle and the largest German castle from the 17th century. It was one of the residences of the Dukes of Saxe-Coburg and Gotha.
The card was signed during the Postcrossing Mini Meet-up in Gotha.
With a matching stamp:
Friedenstein Castle (issued 01-03-2018)
Thank You very much Hanko!