Bergfried Wassenberg

The keep, Wassenberg's landmark, is a hilltop castle and is located on the Wassenberg castle hill. It is a four-storey, almost square brick building that was built in the first half of the 15th century (1400-1420). So it's already 600 years old! The keep stands on a hill that slopes down in all directions.
It was once the residence of the Wassenberg bailiffs and bailiffs. The huge Meinweg area was managed from here, and today it serves, among other things, as a lookout tower with a roof terrace from which you can enjoy a wonderful view over the Rur Valley and the Maasland. 7 panorama boards on the viewing platform explain what is where. So you can look in all directions and you can see as far as the Netherlands, Belgium and the Eifel.
Source:
wassenberg.de/visitors/sightseeing/bergfried

"... The keep is one of only three hilltop castles on the Lower Rhine next to Kleve and Liedberg. The parts of the hilltop castle preserved today within the city wall date almost all from the year 1420. The four-storey square keep standing on a hill sloping on all sides from the The first half of the 15th century is made of brick and was the northernmost point of the city fortifications and the residence of the Wassenberg bailiffs and bailiffs, from where the huge Meinweg area was administered.Today this serves as a lookout tower, enjoy the beautiful view over the Rur valley! The panorama boards installed by the Heimatverein Wassenberg offer you an exciting journey of discovery. ... "
wassenberg.de/glanzlichter/bergfried