Constructed in honor of Finnish composer Jean Sibelius (1865-1957), this seaside park and memorial is one Helsinki’s major attractions. The abstract monument, entitled Passio Musicae, was created by pioneering artist Eila Hiltunen and is actually a kinetic, musical sculpture—a bundle of 600 steel tubes that capture the wind like a pipe organ. When it was unveiled in 1967, it sparked a debate about abstract art. (To appease the critics, a second sculpture—a representational bust of Sibelius—was added to the memorial.)