The Singraven is a working water millin the town of Denekamp. The mill consists of two buildings. One of those buildings has been converted into a restaurant. The exact year that the mill was built is unknown, but the first reference to the mill can be found in a charter from the Stadholder of the German Order of Westphalia in 1448. Ownership of the mill has changed several times throughout the centuries. The Edwina van Heek Foundation took over the mill in 1966. The mill is open to visitors two days a week between April and November.