ドロルスハーゲンの天然記念物・トップ20

If you don't just love asphalt and if you also like to drive on non-asphalted paths, you can only suggest going around the reservoir (approx. 10km). Again and again there are beautiful views of the lake.

Very nice dam with great hiking and biking trails.

The castle ruin Waldenburg is a beautiful little castle ruin in the middle of a great forest. There are also small wooden benches so you can take a rest. There is also an information board to find out more about this ruin.

A request to those responsible: Unfortunately, no diversion is signposted during the closure for the bats! We had to turn back in autumn after searching in vain and asking questions. When it is closed every year, there are also cyclists on the road when the weather is nice and they would be happy to see signs.

"... The Waldenburg is the ruin of a hilltop castle near the town of Attendorn in North Rhine-Westphalia, Germany. It is the oldest known building in the Olpe district and is considered the nucleus of local self-government in the region. It was built there in the 17th century the Commander Waldenburg of the Teutonic Order, which only existed for a short time. The castle ruins are now in the Waldenburg nature reserve. https://de.wikipedia.org/wiki/Waldenburg_(Attendorn) "... The Waldenburg castle ruin is the oldest non-sacred monument in the Olpe district. It is located above the Waldenburg chapel and Lake Bigge. The castle can be reached via the asphalt road in the direction of Bürberg to the ruin. Another forest path begins near the Waldenburg Chapel and initially runs parallel to the dam, but later branches off to the ruins. Coming from Attendorn over the Big Bridge in the direction of Helden and after 50m right to the Waldenburg Bay. The ruin is located on a hill next to the Biggetalsperre in the Sauerland. There is parking in the Waldenburg Bay near the Waldenburg Chapel. ... " https://www.sauerland.com/Media/Attraktionen/Burgruine-Waldenburg

It is best to take this path in spring / early summer, because then you can also see the plants that are explained on the information boards.

Great tour, but really tough at the end.

The listed Wegeringhausen bicycle tunnel connects Rhineland and Westphalia. At 724 meters, it is the second longest bicycle tunnel in Germany. But be careful: the tunnel is closed from November to mid-April. Then rare, protected bat species overwinter there.