It consists of a narrow grass-covered strip with park benches, ornaments, trees and bushes.
[1] The park, with a maximum width of 8 m (26 ft), stretches some 200 m (670 ft) between Henrik Ibsens Gate, which leads to the square of Solli plass, and Sommerrogata, a small street on its north side flanked by buildings.
The name of Sommerro stems from the large estate which belonged to the 18th century merchant Bernt Anker.
[2] The sculpture Mannen med nøkkelen (The Man with the Key) by the French sculptor Auguste Rodin was unveiled in the park in 1902.
The length of the park was considerably reduced in at the end of the 1930s with the development of Lapsetorvet and Solli Plass.