Finlandia Hall

The City of Helsinki wanted a national concert and congress hall on the shore of Töölönlahti, inside the site Aalto had reserved since the 1950s for an unbuilt new civic centre along the bay. His competition design was ready by 1962, though construction did not start until December 1967 and the main hall opened in December 1971; a congress wing followed in 1973–75, extending the marble-clad volumes further along the water. Aalto clad the asymmetric white blocks in thin slabs of Italian Carrara marble, which he described as a deliberate tie to Mediterranean culture. The marble warped and cracked within two decades of Helsinki's freeze-thaw winters and was patched repeatedly before a full three-year renewal replaced it with more durable South Tyrolean stone, reopening the main hall in January 2025. On 1 August 1975 the building hosted the signing of the Helsinki Accords by thirty-five heads of state.