Rhijnauwen is a castle, former heerlijkheid (fiefdom), and former municipality in the Dutch province of Utrecht.
The name is probably derived from Rhijnauwen Auen, an old word for the wet meadows along the Rhine.
In 1449, the brothers Frederick and John Renesse Rudolf after the victory of Deep Holt Zweder banned from Culemborg, and in 1450 the house was on fire Rhijnauwen commissioned by the city of Utrecht.
The then owner, the Dowager Strick van Linschoten should stay there until the end of her life.
On April 1, 1933 was leased to the hostel Rhijnauwen Foundation, which gave the building its current destination.