The Sibelius Monument is dedicated to the Finnish composer Jean Sibelius (1865–1957), probably the most well known composer in Finland.
The core of Sibelius's oeuvre is his set of seven symphonies. In addition to the symphonies, Sibelius's best-known compositions include Finlandia, the Karelia Suite, Valse triste, the Violin Concerto in D minor and The Swan of Tuonela . His works continue to be performed frequently in the concert hall and are often recorded.

The monument was designed by Eila Hiltunen and unveiled on September 7, 1967. Originally it sparked a lively debate about the merits and flaws of abstract art, for which reason an effigy of Sibelius was included in the work. It consists of series of more than 600 hollow steel pipes welded together in a wave-like pattern. The purpose of the artist was to capture the essence of the music of Sibelius. The monument weighs 24 tonnes (24 LT; 26 ST) and measures 8.5 × 10.5 × 6.5 metres.

A smaller version of the monument is located at the UNESCO headquarters in Paris. A work with a similar concept, also designed by Hiltunen, is located at the grounds of the United Nations headquarters in New York City.