The castle ruins in Wenecja are the remains of a 14th-century stronghold whose owner – Mikołaj Nałęcz – was nicknamed the “Devil of Wenecja” for his cruelty. The preserved walls and foundations can be visited while learning the dark legends of the place.
The ruins neighbour the Narrow-Gauge Railway Museum, so both attractions are easy to combine. It is a picturesque stop on the route of the historic Żnin–Biskupin railway.