Here is a joint issue Ukraine and Poland featuring Wooden Churches (Tserkvas) of the Carpathian Region. There are sixteen of these churches, with eight on each side of the border. In 2013 these were listed as a UNESCO World Heritage Site
These Tserkvas are Eastern Orthodox and Greek Catholic and were built of horizontal logs with octagonal domes between the 16th and 19th centuries. The two depicted on this stamp are
the Greek Catholic Parish Church of St. Paraskevi in Kwiatoń Poland built around 1700 with the tower added around 1743 (left)
St George's Church of Drohobych, Ukraine (right). It is the oldest and best preserved church of the region, built around 1500. It was last renovated between 1678 and 1711.
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