The combined stream was used in building the town fortifications.

The Red Tower goes back to around 1300 and was part of the old town fortifications.

The town fortification on the north side was never rebuilt after the fire of 1840.

A tower, one of few remains of the original town fortifications.

Until 1250, most of the town fortifications, whose remains can still be seen today, were complete.

The greater part of the town fortification was torn down in the 19th century.

In the town it is possible to find remains of former town fortifications from the 16th century.

Outwards from this about 1250, the town fortifications took shape.

Various towns held public lotteries to raise money for town fortifications, and to help the poor.

The town fortifications with three gates were constructed in 1610-1647.