On Tuesday I got four postcards from Germany.
One of them shows the Trier Amphitheater. The Trier Amphitheater was built in the 2nd century and back then it could accommodate around 20000 spectators. As one of the Roman Monuments in Trier it is since 1986 on the UNESCO World Heritage List.
100th birthday of Heinz Sielmann (issued 08-06-2017)
Thank You very much Marie-Luise!