This undated photo, provided by the Museum of the City of New York, a section of New York's Cathedral of Saint John the Divine shows vaulted tile work from the Gustavino company featuring a spiral ... more 
This undated photo, provided by the Museum of the City of New York, a section of New York's Cathedral of Saint John the Divine shows vaulted tile work from the Gustavino company featuring a spiral stair. Rafael Guastavino and his son Rafael Jr., are the subjects of the new exhibition "Palaces for the People: Guastavino and the Art of Structural Tile," a new exhibition opening March 26, 2014, at the City Museum. (AP Photo/Museum of the City of New York, Michael Freeman) less 
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Associated Press | Photo By Museum of the City of New York, Michael Freeman
Fri, Mar 28, 2014 3:03 PM EDT