This is Wroclaw's Town Hall in which you can find a museum and beautiful restaurant. I'm told it is the oldest in Europe. You can read more about the Market Square and Town Hall here. I love this photo of the Town Hall in winter with a very picturesque snowfall. Every time I receive a postcard of somewhere foreign (and often new to me) I immediately wan to add it to my list of places I would like to visit (and my list is very long these days).
The stamp on the left is one of their manor house series of stamps, and the one on the right commemorates the town of Sopot in Eastern Pomerania on the southern coast of the Baltic Sea.
{PL-411239}
Postcrossing card #34