The first assumption was built here in the second half of the thirteenth century. It was surrounded by swamps, and the connection to the mainland had the east side. The area was then uninhabited, and the castle was protected against retaliation raids of Poles and Lithuanians, but even before the year 1332 it accommodated the subordinate prosecutor and then the commander of Dzierzgoń Ostróda. In the third decade of the fourteenth century began to develop faster podzamkowej settlement, it was associated with the intensification of the settlement campaign of the Order.

For the defense of the existing settlement and administrative purposes, the construction of a new castle. Until recently it was taken as the date of commencement of the construction year 1380, almost simultaneously with the foundation of the town. Recent studies have shown, however, that the castle was built before the year 1380. The first mention of the castle in documents from 1359 years, these documents have also been found recently. Since the castle in 1359 years longer fulfilling its functions, we can assume that was erected in the first half of the fourteenth century. The newly built castle had established the mayor.

The castle has a rectangular plan, a small courtyard enclosed by four wings. In the east is the entrance gate. Two massive square towers located at the corners of the east wing flank the access gate. Opposite the gate of the west wing was the main building of the castle. On the second floor representative housed a chapel, refectory and office. The chapel has a starry vault, in the refectory, and traces of paintings from the 1400 and 1430 years. Third were the granaries. Southern and northern wings have two floors, in the thickness of their walls are porches shooting. These towers already have five floors and the upper cornice have height of 23 m.

In 1400 Nidzica passed by the Lithuanian army ravaging around. In 1410 the town was on the road parade of troops of King Wladyslaw Jagiello and was mastered by them, the crew of the castle did not place a strong resistance. Together with the city, the castle was in the hands of Polish for 1411 years. At the beginning of the Thirteen Years' War, the castle was captured by the townspeople stormed Nidzica. They sent it quickly troops trade unionists belonged to them throughout the entire war. After 1466 years the city became part of the Prussian Religious being found here Comtat. In the sixteenth century it was transformed into the county Prussia.

In 1517 years access to enter the inner courtyard strengthened forecastle. It consists of two buildings, low gate and round tower. From the north ward closed by a wall. In 1583 years had a relationship with the castle architect Blasins Berwart. Probably he ascended the second ward.

During the flood the castle fell into the hands of Swedish. In 1656 one of the branches of the Tatar supporting the Polish army tried to bounce castle, but more modern armed crew fortress artillery and muskets Tatars forced to abandon the assault.

After the conclusion of peace with the Swedes repaired the ruined castle battles. In 1784, a fire took the sixteenth ward utterly destroying them. Castle then had no military significance so not cared about him as before. In 1812, stationed in the French army of Napoleon traveling towards Moscow seriously devastated the building.

It was only in the years 1828-1830 the castle was repaired again. It happened because of the idea of ​​legal counsel Ferdinand Gregorovius Timothy adapt it to the needs of the judiciary. After the renovation in addition to the court also housed a prison.

At the end of the Second World War fire destroyed part of the buildings, damage was secured in 1952, and in 1959-1965 for the purposes of cultural and tourist object perfectly renovated, retaining all its original features relics. Placed in a cultural center, a cafeteria, a library, a hotel and hostel scout.