Bydlin Castle

Bydlin Castle is a limestone ruin in the Świętokrzyskie region featuring a rectangular tower house with thick walls and remains of fortifications. The ruins sit on a hilltop and are now part of the Eagle's Nests Trail system, which guides hikers and cyclists through the surrounding landscape.

The castle was built in the late 14th century by Niemierza of the Strzała family and served as a residential fortress for centuries. It was destroyed in 1655 during Swedish military campaigns in the region.

The fortress transformed from a knight's residence to a religious site when owner Mikołaj Firlej converted it into the Church of the Holy Cross in the late 16th century.

The ruins are well-accessible through hiking and cycling routes of the Eagle's Nests Trail system. The hilltop location provides views over the surrounding area and is open year-round for visitors.

The grounds contain remnants of World War I trenches from battles fought in November 1914 between opposing forces. These traces serve as reminders of when the region became a contested battlefield during that conflict.