UNESCO site from Portugal :)
Royal Building of Mafra – Palace.
Podlasie is a historical region in the Eastern part of Poland. The two stamps also represent this region.
Luisenthal is a small town in Germany. It has a large forest and a dam and also loads of green space.
Lovely B&W photo of Coimbra, The sender says that this photo was taken by a very patient artist who waited for the perfect framing of the clouds!
The sender didn't write anything about the card unfortunately. It's been a while since I received a card from this country so very glad it came through to me.