More than 2,500 years ago, a town wall was built.
Residents can tell you where to go for the best view of town walls.
The western part was discovered first and the southern side is near the town wall.
The town walls were taken down early in the 19th century.
In 1344, building work began on the town wall, and was already finished about 1400.
Today, much of the town wall remains, particularly on the south side.
A town wall was constructed at the end of the 12th century.
Behind the church are the remains of the town walls.
Parts of the old town wall can also be seen.
In the 17th century, the first houses outside the town wall were built.