24 million glittering mosaic stones inspire thousands of church visitors every year. To protect the valuable mosaics, the church can only be visited in conjunction with a guided tour.

The Helenenquelle on the Kyll Cycle Path near Gerolstein Town Hall is a popular resting place for cyclists and hikers. The fresh mineral water comes from a depth of approx. 90 m and can be drunk free of charge from April-October from the brass tap. Here it is worth taking a break and the park is ideal for a small picnic in nature.

Guided tours in the upper castle of Lissingen can be booked with more than 8 persons

The magnesium-calcium mineralisation here comes from sandstone and claystone as well as overlying volcanic rock. The high content of carbonic acid originates from the Eifel volcanism and gives the water the name ‘Säuerling’ (acidulous). A total of five springs are known in Birresborn, several of which were of great economic importance. Today, drinking water can be taken from the Lindenquelle and the Fischbach-Drees.

The millstone caves are located northwest of Gerolstein, between the districts Müllenborn and Roth. For those who want to get really deep insights into the interior of the volcano Eifel, a visit to the Mühlstein caves is a must.