Domberg, Mountain summit in Thuringia, Germany.

Domberg is a mountain summit in Thuringia that rises to approximately 675 meters and is surrounded by dense forest. Prominent rock formations, particularly the Ottilienstein, jut out from the trees and create a distinctive landmark.

A chapel on the mountain has been documented since 1528 and served as a gathering place for local miners. The building survived the religious upheaval of the Reformation period because miners actively protected it.

The Ottilienkapelle near the Ottilienstein is linked to miners, who held a Bergmannsfest there in 1528; local historians showed the miners' tradition actually belonged to the Annenkapelle at the town edge. Local lore places the hermit Burkhardt in the Ottilienfelsen in the 8th century, fighting the last pagan rock and spring cults, so the chapel marks a former pagan site. In 1544 miners refused to let reformers demolish the dilapidated chapel.

The 21 m Bismarck Tower on the summit is open to the public all year; trees cleared in 2001/2002 opened the round view. The Dombergbaude, a mountain restaurant with beer garden, stands just east of the tower, and a transmission mast about 50 m northwest. The tower festival is held each year in late August or early September.

The Ottilienquelle was not known in the Middle Ages: a Suhl doctor came across the mineral spring by chance in the 18th century, and its water was then used for healing. The spring rises at the rock and is named after Saint Ottilie, like the Ottilienstein and the chapel beside it.