[3] The municipality lies in the Vulkaneifel, a part of the Eifel known for its volcanic history, geographical and geological features, and even ongoing activity today, including gases that sometimes well up from the earth.

Sassen lies on the south slopes of the Hochkelberg, the High Eifel’s third highest mountain, in a hollow with an elevation of about 550 m above sea level.

In feudal times, which ended in 1794 with the French occupation, Sassen belonged to the Electoral-Cologne Amt of Nürburg.

In the course of administrative restructuring in Rhineland-Palatinate in 1970, the municipality, along with the others in the Amt of Kelberg, was assigned to the Daun district, which has since been given the name Vulkaneifel.

On the Hohe Acht, a height near the village (not the like-named mountain), lay two fields, one named Zehntanwand and the other Freianwand, references to paying tithes (Zehnten – frei means “free”).

At the south end of the village stands a small chapel, which features Stations of the Cross.