Verwaltungsgebäude mit Ausstellungsraum und Haussternwarte mit astronomischer Kuppel auf dem Dach. Kuppel über Aussentreppe zugänglich.

The library of the Benedictine Abbey of Saint-Mihiel was founded in Carolingian times. The first manuscripts and books were collected and assembled by order of the church. With the invention of the printing press in the 15th century, the compilation grew rapidly.

standing on top of the Peterberg hill in the northern Saarland, the astronomical observatory opened its doors to the public in 1997.