Bobolice Castle (aut. Liwia Słabikowska)

The castle in Bublitz was built by King Casimir III the Great in the middle of the 14th century, probably in place of an earlier wooden structure. The castle was a part of the defence system of royal strongholds protecting the western border of Poland on the side of Silesia.

Bobolice Castle (aut. Natalia Stolarczyk)

Olsztyn Castle (aut. Paulina Rak)

The ruins of the castle in Olsztyn near Częstochowa are among the best-known strongholds of the Polish Jura. A cylindrical, 35- meter tall tower catches the eye from afar. It was built of white limestone, and overbuilt with brown bricks, like a mast of the ship floating in the rough sea. Indeed, the castle witnessed many dramatic events, including the assassination of Maciek Borkowic.

Olsztyn Castle (aut. Julia Kaczyńska)

Olsztyn nastle (aut. Julia Bekus)

Ogrodzieniec Castle (aut. Kamil Krauze)

The castle is a ruined medieval castle in the semi-mountainous highland in south-central Poland. Rebuilt several times in its history, the castle was originally built in the 14th–15th century by the Włodkowie Sulimczycy family.  The castle is situated on the 515.5 m high Castle Mountain , the highest hill of the Kraków-Częstochowa Upland.

Ogrodzieniec Castle (aut. Natalia Wieczorek)

The Upper Castle in Opole (aut. Nina Niezgoda)

The Upper Castle was built  in the 14th century by Ladislaus of Opole. In the 16th century it was intended for a prison.

Ojców Castle (aut. Oliwia Kurpios)

Ojców Castle - a castle located in the Kraków-Częstochowa Upland, part of a system of castles known as the Eagle's Nests - formerly protecting the southern border of the Kingdom of Poland. Currently housing a museum dedicated to the castle in its renovated castle-tower.