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Hundertwasser's Odd Architecture, Vienna, Austria

This building is one of several, designed by Friedrich Regentag Dunkelbunt Hundertwasser and located in Vienna. Hundertwasser prefers curves and spirals to straight lines and his eccentric buildings have mismatched windows, undulating floors, unexpected domes and trees growing from them. Three of the most famous structures are the Hundertwasserhaus apartment building, the KunstHaus and the local heating plant, Fernwarmewerk.