Burg Bring, Medieval castle near Edersee, Germany.

Burg Bring is the ruin of a small hilltop castle at 248 m above sea level above the Edersee near Edertal-Bringhausen. Since the Edertalsperre dam was built in 1914, its hill has become the Liebesinsel; only low foundation and cellar walls remain, lying in the lake and visible mainly at low water.

The castle's construction date is unknown; its builder is said to have been a man named Brunink, and "Burg Brunink" later became "Burg Bring". A knight of Bringhausen is first documented in 1196, so the castle is seen as the protective stronghold of that now-deserted valley settlement. In the 15th century the Counts of Waldeck held a castle seat and an estate at Bringhausen. When and how the castle was abandoned or destroyed is unrecorded; by the 19th century only a few wall remains stood, and these now lie in the Edersee.

The structure represents an example of medieval defensive architecture in Hesse, now maintained as a cultural heritage monument for educational purposes.

The ruins stand on the Liebesinsel, the former castle hill, which becomes an island when the Edersee is full; it is then reached from Bringhausen by boat or by swimming. In late summer and autumn, when the water is usually low, the island can be reached on foot. Only low foundation and cellar walls remain.

The castle hill became Liebesinsel only after the Edertalsperre dam was built in 1914; the island can be reached on foot in late summer or autumn when the lake is low. Legends tell of knights and of Wichtel guarding the gold of the Eder around the remaining walls.