Next to the Geulhemer watermill, which is now in use as a cafe, one finds themself in the environs of an underground network of corridors under the "Geulhemmerberg" hill.

In the past, parts of this network were used as cave dwellings due to marl excavation.

Part of the cave dwellings were restored and can be viewed on a group tour.

It was developed by the architect Henri Reek and commissioned by Zuyderhoudt; its design is in the English Neo-Gothic style.

Geulhem is a much loved holiday destination due its closeness to the sloped woods and the availability of many different hotels.