Blasiuskapelle, Chapel on Blasiusberg in Dornburg, Germany.

The Blasiuskapelle stands on the 390-meter basalt spur of the Blasiusberg above Frickhofen, Dorndorf and Wilsenroth. Its 1869 rebuilding, modelled on a Romanesque pillar basilica, gave it a longer, higher nave with two aisles. The shortened medieval tower now serves as the choir; blind arches, parts of the ribbed vault and the west portal survive from the earlier church.

A wooden chapel first stood on this site dating to 630 and was dedicated to Saint Michael, making it one of the oldest churches in the region. The structure has been continuously developed and rebuilt over the centuries to reach its present form.

The name Clesberg, an old name for the hill, is traced to the Latin ecclesia (church). The parish once covered Frickhofen, Dorndorf, Langendernbach, Dorchheim, Mühlbach, Waldmannshausen and, from 1667, Wilsenroth. A carved late-Gothic relief of the Holy Family that belonged to the chapel's furnishings is now kept in the parish church of Wilsenroth.

The chapel is accessible by multiple hiking routes ranging from 6 to 20 kilometers with varying difficulty levels and elevation gains suitable for different abilities. Plan your visit according to which trailhead you choose and how much time you have available for the walk.

The chapel narrowly escaped planned demolition in 1816 when the Nassau government ordered its destruction for administrative reasons. A local priest from Frickhofen intervened to prevent the demolition and preserve the structure for future generations.