Eila Hiltunen's 1967 monument to Jean Sibelius, in a small park on the Töölö Bay. Six hundred hollow steel tubes welded into a wave-shaped structure that — depending on which side you stand on — looks like organ pipes, ice, or a cresting wave. A separate cast bronze bust of the composer sits beside it.
Reachable on foot from Töölö or by bus 24 from the centre. The park is part of a longer waterfront walk that takes in the rowing harbour, the Hietaniemi cemetery (where Sibelius is buried), and Hietaniemi beach.