This is the Mir castle Complex in Belarus....it is located near Mir in the Karelichy District of Hrodna (Grodno) in the north-eastern part of the country.
The construction of this castle began at the end of the 15th century, in Gothic style. It was subsequently extended and reconstructed, first in the Renaissance and then in the Baroque style. After being abandoned for nearly a century and suffering severe damage during the Napoleonic period, the castle was restored at the end of the 19th century, with the addition of a number of other elements and the landscaping of the surrounding area as a park. Its present form is graphic testimony to an often turbulent history.
Building of the castle was completed by Duke Ilinich in early 16th century, and around 1568 the Mir Castle passed into the hands of the Lithuanian Duke Radvila, who finished building the Castle in a Renaissance architecture style.
It is also a Belorussian UNESCO whs.
Thanks a LOT Kati for the absolutely great postcard!