- medievalheritage.eu en/main-page/heritage/poland/…In a document from 1289, he donated 100 Frankish lans to the monastery in Czarnowąsy, located in the forest next to the Opole castle, then called “new”...
- tripadvisor.com Attractions-g274776-Activities-…Top Opole Castles: See reviews and photos of Castles in Opole, Poland on Tripadvisor.
- realportico.com photoportico/castle-in-tulowice-…Sell a castle or a historic property in Opole Voivodeship.
- en.wikipedia.org OpolePiast Tower on the island, the only part that remained of the medieval Piast Castle, the local residence of the dukes of Opole.
- staypoland.com castles-and-palaces-of-the-opole-…Today, after a complex renovation, visitors can attend a multimedia exhibition about Opole’s history, the Piast Castle, and the tower itself.
- thingstodopost.org top-10-castles-in-opole-…The province's name derives from that of the region's capital and largest city, Opole.
- http://polishcastles.eu castles/opole/opole.phpDriving down the highway from Katowice to Wrocław you need to turn right into the road no 54 towards Opole.
- OpenTripMap.com en/card/Q1776945Piast Castle in Opole, photographed in 1925. It was demolished between 1928-30 although the tower was preserved. by Max Glauer.
- commons.wikimedia.org wiki/Category:Opole_CastleMedia in category "Opole Castle". The following 14 files are in this category, out of 14 total.
- tr.wiki7.org wiki/Опольский_замок_ПястовOpole Piast Kalesi ( Lehçe : Zamek Piastowski w Opolu ), Odra Nehri'nin ortasındaki Ostrówek adasında bulunan Opole Piasts'ın eski bir malikanesi olan Opole'deki iki...