Ympyrätalo - Wikipedia
en.wikipedia.org › wiki › Ympyrätalo1968. Renovated. 2002–2004. Design and construction. Architect. Heikki and Kaija Siren. Ympyrätalo ( Swedish: Cirkelhuset; lit. "Circle House") is a circle-shaped office building located in the Hakaniemi district of Helsinki, Finland. The building is a local landmark.