This awesome and unique piece of architecture, the Temppeliaukio ('Church in the rock') was designed by brothers Timo and Tuomo Suomalainen and carved out of solid granite as recently as 1969. It has become one of Helsinki's most famous attractions, its rock walls roofed over with a massive concave copper ceiling, which gives it excellent acoustics. The church is often used as a venue for musical events.

Address: Lutherinkatu 3; Telephone: (0)9 494 698; Transport: Tram 3B, 3T; Opening time: Monday, Tuesday, Wednesday 10am to 5pm (closed between 12.45pm and 2.15pm on Tuesdays); Thursday and Friday 10am to 8pm; Saturday 10am to 6pm; Sunday 11.45am to 1.45pm and 3.30pm to 6pm; Admission: Free