Wąbrzeźno Castle, Gothic castle ruins in Wąbrzeźno, Poland.

Wąbrzeźno Castle is a medieval fortress built with Gothic architectural details including pointed arches and stone ribbed vaults. The visible foundation remnants and walls reveal how the original structure was organized and constructed.

Built of brick on a stone foundation before 1321 for Bishop Hermann von Prizna of Chełmno, the castle was called Friedeck. Polish forces occupied it in 1454 during the Thirteen Years' War, and Order troops burned it in 1464. Bishop Maciej Konopacki rebuilt it in Baroque style between 1611 and 1613; Swedish troops destroyed it in 1655/56, and by 1670 it was recorded as a ruin.

The castle was the residence of the bishops of Chełmno, not the Teutonic Order; Bishop Maciej Konopacki rebuilt it in Baroque style between 1611 and 1613. A park was laid out on the site in 1920, and archaeological research led by Marcin Wiewióra took place in 2010–2011.

The site is open to visitors and offers good views of the fortress layout from various angles. Be prepared to explore ruins that are overgrown in places and involve walking on uneven ground.

The fortress shows a rare architectural transition from purely military design to a livable residence, still visible in its stone remains. This shift reflects how medieval fortifications evolved to serve new purposes beyond defense.