Burg Großbüllesheim, Former water castle in Großbüllesheim, Euskirchen, Germany

Burg Großbüllesheim is the remnant of a former moated castle between the Erftmühlenbach stream and the watercourse Untere Ahr in the Großbüllesheim district of Euskirchen, at An der Burgmühle/Kompstrasse. Of the two-part pond complex that once formed a knightly seat, only the outer bailey's residential building adjoining the gate tower survives; of the main castle, only 17th-century remains are left, and the moat has been filled in.

Burg Großbüllesheim was first documented in 1402 as a fief of the Duke of Jülich held by Reymer Spies von Büllesheim. It remained a Jülich fief until 1802, the year Ludwig von Brempt died, after which it ceased to be a noble seat and decayed. In 1867 the estate passed to the Halfen family Nettekoven, who built a new dwelling in 1886 and split the land into two farms still held by two owners.

The name Großbüllesheim comes from the noble family Spies von Büllesheim, who held the castle as a fief from 1402. After 1802 the site lost its noble function, and since 1867 the Nettekoven family has divided the land into two independent farms, still run by two owners today.

The castle is now privately owned and divided into two sections managed by separate families as agricultural properties. The exterior architecture can be viewed from outside, but visitors should respect the private nature of the residence.

The original moat that once surrounded this two-part castle complex was completely filled with earth and is no longer visible today. This infilling dramatically altered the appearance of what was once a water castle.