The water castle, which occupies a large area of ​​the central square of Jesenik, was so named because originally it was surrounded by a deep ditch filled with water. It was built on the site of several ancient towers, dating from the middle of the XIII century. They were demolished in the XV century for the construction of a grand castle, consisting of one floor. The fortress had a rectangular shape and includes one wing before which was broken yard and the moat was spanned sturdy stone bridge that has survived to the present day.

Water fortress was built in the Gothic style, and later almost did not change its original appearance. At the beginning of the XVI century the castle were added several side wings and a small tower, which decreased after the fire, which occurred in 1727. Then the main body of the building was completed and received the second floor. It is in this castle we see today.

Water fortress owned by laymen, the local noble family, which eventually lost ownership of the castle. He moved to the ministers of the Church - bishops and archbishops of Wroclaw. Sometimes they passed the local castle for rent for everyone, but then returning their property to the Church.

Fortress for a long time was the only fortification Jesenik. The fact that the city did not have the right to build the city walls, so was open to any enemy.

In 1932, the Water Fortress was opened museum, who works in it so far. In the 80-ies of the last century, the castle has been renovated, so now looks quite presentable and picturesque.