Cologne Cathedral,Germany.

Cologne, a 2,000-year-old city spanning the Rhine River in western Germany, is the region’s cultural hub. A landmark of High Gothic architecture set amid reconstructed old town, the twin-spired Cologne Cathedral is also known for its gilded medieval reliquary and sweeping river views. The adjacent Museum Ludwig showcases 20th-century art, including many masterpieces by Picasso, and the Romano-Germanic Museum houses Roman antiquities.
Cologne Cathedral in the backdrop is a UNESCO heritage site.
Stamps-
2013   The 800th Anniversary of the City of Dessau
2016    Buk lighthouse,1878.
Thank you Wiebhe for the beautiful card and stamps.