The Gehlenborg barn is around 400 years old. It can be visited inside from spring to autumn, where the local history society has created an informative exhibition that tells the story of Markhausen and the barn. There are also weatherproof benches there, and the light switches are on the left of the gatepost next to the door. If there is a wooden sign outside saying "open", you can open the gate (press it a little to get the wooden wedge out of the iron part). The barn itself has been restored to its original state with clay half-timbering and a thatched roof. The clay was brought from an almost dried-up clay pit in Neuvrees near Gehlenberg (if you come via Gehlenberg, stop by the Kulturmühle, where there is an open-air exhibition showing what a clay pit looks like without clay. It's worth it!) Just take a look at the beams - below you can see exactly where some have been replaced, because they went through a saw. But if you look at the other beams, they are the way the tree grew back then. This is what makes the old barn incredibly charming!