We received the following postcard from Germany. It was sent by Eberhard, who lives in the city of Darmstadt, in Germany, 1554 kilometers away!
Eberhard is a teacher of natural sciences, so in the postcard he has sent us we can see an image of a local building called the 'Darmstadtium', which incidentally is the same name of a chemical element that was discovered by scientists in this city (hence its name).
The card informs us of this and of a few other aspects, and comes with a nice stamp as well.
Thanks a lot, Eberhard!