Herbert Muschamp is unequivocal about Zaha Hadid’s first American building, the Lois and Richard Rosenthal Center for Contemporary Art in Cincinnati: “It is an amazing building, a work of international stature that confidently meets the high expectations aroused by this prodigiously gifted architect for nearly two decades. Might as well blurt it out: the Rosenthal Center is the most important American building to be completed since the end of the cold war.”