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A 9-km canal between Esrum Sø lake and the north coast at Dronningmølle, built in 1805 to transport timber from the forests to Copenhagen. The canal lost its importance when the railway was built, and was subsequently abandoned. However, it is still visible in the landscape, and while partly overgrown, parts still carry water and many of the old installations related to the canal is still there. The trail where horses used to haul the prams along the canal, still exists, and offers a fantastic walk.
Esrum Å is the principal drainage of Lake Esrum, Denmark's second largest lake, located in Gribskov Municipality, some 50 km north of Copenhagen, Denmark. The 10-km-long stream extends from the northwestern part of the lake and flows past Esrum Watermill and Esrum Abbey on its way to The Kattegat at Dronningmølle.
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An important locality from the Viking age and up to its days as a royal castle from the 12th to the mid-16th century when it was disbanded following the Count's Feud civil war. Many of the stones were used during the construction of Kronborg castle in Helsingør. The moat and ground layout of the old castle is still visible