is a lake
in Northeastern Zealand
. It defined Farum municipality
's southeast border and is the site of Nicolai Eigtved
's 18th century small pleasure pavilion for Privy Councillor Johan Sigismund Schulin
on the Furesø Lake called Frederiksdal Pavilion
Since January 1, 2007, its western part has lain within the Furesø municipality and has a popular beach.