Kaisaniemi park (Finnish: Kaisaniemen puisto, Swedish: Kajsaniemiparken) is a popular park, in the center of Helsinki, in the region of Kluuvi. The Kaisaniemi Park was named after Catharina "Cajsa" Wahllund.[1] Part of the park was given to the University of Helsinki in 1829, for gardening. The oldest greenhouse was opened in 1889.
It is a place of several events, including concerts, the World Village event and The Tuska Open Air metal festival, which was held there from 2001 to 2010.