AUGUST 2013 CLUE: Although not trained as an architect, the designer of this boiler house and related buildings for a European complex caught the spirit of the age.

ANSWER: Rudolf Steiner, the philosopher and spiritual leader, who designed the concrete boiler house at Dornach, Switzerland, in 1915 as part of his Goetheanum complex.

WINNER: Devin Kleiner, a project architect and associate with Perkins + Will, Seattle, Washington

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2014 Winners: View winners of the 2014 contest.

Photo &copy Mark Lyon

2013 Winners: View winners of the 2013 contest.

Photo © Tim Hursley