As we leave the town hall, at the left side of the square we can see the oldest public building of the department, the seat of the Hajdú District which is now the seat of the city’s Court. The building was constructed in three phases between 1762 and 1871. As we enter at the olden carriage gateway we arrive in a very pleasing yard surrounded by an archway. In the past under the building there was a feudal prison made up of four cells where was imprisoned Bandi Angyal, the famous bandit of the folk ballads. This type of prison is very rare in the Pannonian Plain and it was exceptional in Hajdú-Bihar. It became the Museum of the Hajdú Country (territory of the Hajdús) in 1951.

At the porch on a nice column the bust of Gábor Báthory created by Tamás Fekete greets the visitor in the vaulted entrance. The statue was raised by future generations in remembrance of Gábor Báthory (1589-1613), duke of Transylvania. The permanent exposition of the museum is called 'History and ethnography of the Hajdúság region'. In the yard we can see a collection of statues remembering of those who thanks to their work, activities and life had a strong connection with the Hajdú Country and Hajdúbszörmény. There are the statue of Miklós Káplár, Mihály Vitéz Csokonai, István Györffy, Péter Veres, Gábor Sillye, Gábor Bethlen, István Bocskai and Jenő Király. In summer we can attend musical and cultural events in the big and spectacular yard of the museum.