The Tierpark Dählhölzli, or Dählhölzli Zoo, is a public zoo in Bern, Switzerland. It opened in 1937 and is operated by an affiliated association, the Tierparkverein Bern. The city of Bern owns the zoo and provides most of its financing. It is situated on the bank of the river Aare near the historical city center. The zoo exhibits some 3,000 animals on 15 ha (37 acres) and employs a staff of 27. It also cares for the bears exhibited in the Bärengraben.