This undated photo, provided by the Museum of the City of New York, shows Rafael Guastavino, Jr., the son of Rafael Guastavino, a Spanish architect and builder who created the Guastavino tile used in the construction of self-supporting arches and architectural vaults. Guastavino, Jr. became an apprentice under his father and vice president of their company. The Guastavino's 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)
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