What prize did designer of The Kunsthaus Bregenz win in 2013 ?
Kunsthaus Bregenz:  Commissioned by the State of Vorarlberg and designed by the Swiss architect Peter Zumthor, it was built between 1990 and 1997. Peter Zumthor:  Though managing a relatively small firm, he is the winner of the 2009 Pritzker Prize and 2013 RIBA Royal Gold Medal.
RIBA Royal Gold Medal.