Schlossberg, Historic hill in Quedlinburg, Germany.

Schlossberg is a sandstone hill southwest of Quedlinburg's old town, rising above the Mühlengraben stream. On its slope stands the Quedlinburg collegiate foundation, whose Romanesque St. Servatius church was built mainly between 1070 and 1129. The photograph shows connected stone buildings with red tiled roofs, a stepped gable, a tall square tower with a pyramidal roof, and an arched wooden door marked with the number 30.

In 936, Otto I founded the Quedlinburg collegiate foundation on the hill at the urging of his mother Mathilde, widow of King Henry I, who had died that same year. The Romanesque Collegiate Church of St. Servatius was built essentially between 1070 and 1129. The hill's sandstone, inclined about 27 degrees, proved unstable, and in recent decades large slabs slipped at the southwestern foot, prompting anchored retaining walls.

The Collegiate Church of St. Servatii draws visitors interested in Romanesque art and medieval stonework. Inside, tombs and carved figures from the Middle Ages fill the nave and crypt, giving a clear sense of how central this place was to early German royal life.

The hill is reached on foot from the old town center by following paved paths that rise gradually from the lower streets. Some parts of the church and castle, including the crypt, involve steps and uneven surfaces, so those with mobility difficulties may find certain areas harder to access.

The hill is made of Cretaceous sandstone whose beds tilt about 27 degrees to the south-southwest. At the southwestern foot, the so-called Klippen expose a very fine-grained layer that flows when wet, and large blocks of harder sandstone have slid down it in recent decades. Steel anchors driven deep into the rock now hold the retaining walls.