Kremenets Castle is situated in the city of Kremenets, Ukraine. The castle was built of limestone on a steep hill. The keep located on its west side, and its width was 65 metres and length of 135 metres. All the elevation was surrounded by a tall stone wall, and in the earlier ages of the 13th century wood as building material was used instead.
The castle is known as an impregnable citadel that had been tried by many as
1226 Hungarian king Andrew the Second,
Wikipedia https://en.wikipedia.org/wiki/Kremenets_Castle
Address (Unnamed Road), Кременець, Ukraine
Coordinates 50°5'41.317" N 25°43'50.384" E