First, we head to Paulinenwäldchen, named after Pauline, Napoleon's sister, who also liked to go for walks here. The bluestone obelisk from 1810 also dates from this era and was one of the reference points for the geographer Jan Joseph Tranchot, who mapped the Rhineland on behalf of the French government. The old Berensberg farms also date back to the French rule in the 18th/19th century. Parts of the Berger Busch estate are the remains of the French Trappist convent of Mont Sinon, which existed until 1826. We hike gently down into the Wurmtal valley along orchards, old pastures and hollow paths. The wide meadow meadows of the Wurm open up at the bottom. With its free-swinging meanders, gravel and sand banks, open meadow meadows, alluvial forests and steep banks, it is considered a valuable natural gem that is unparalleled anywhere in the country. The entire valley with over 445 hectares between Aachen, Würselen and Herzogenrath is protected. It is allowed to develop freely in the open floodplain. The most impressive hollow path on the route can be found at Landgraben . The 14th century protective system of hedges, ramparts and ditches was intended to protect the outer rural quarters of the Aachen Empire from attacks on the border. The ramparts are still clearly visible and the mighty old beech trees can be traced back to the former hedge. Down in the valley, the river Wurm acted as a border obstacle.