Piotrków Trybunalski Royal Castle - Credit: Wikimedia Commons
The Piotrków Trybunalski Royal Castle is a Gothic-Renaissance structure in Piotrków Trybunalski, Poland. It was built in the form of a residential tower in the 16th century and was transformed into a museum open to the public in 1919. Read more on Wikipedia
Source: en.wikipedia.org