Kaivopuisto, or in spoken language, Kaivari is one of the oldest and best known parks in central Helsinki, Finland, and also a neighbourhood of about 500 inhabitants where the park is located. Kaivopuisto offers several hectares of parks, both on flat ground, and on cliffs. The park also includes traces of stone fortifications built in the 18th century. Every summer, thousands of Helsinkians come to Kaivopuisto to sunbathe, to have picnics, or to hold sport. The largest hill in the park is a favoured slope for tobogganing during the winter.