Zolnay came to the United States in 1893 to attend the World's Columbian Exposition, at the behest of the U.S. consul-general to Vienna. Already enjoying considerable acclaim in Europe, he had no difficulties in adjusting to life in America. He intended to return home, but became "enamored" with the United States, and chose New York City for his new home in 1894, eventually achieving American citizenship. In 1895 Zolnay was "employed to make models for the ornamentation" for the Parthenon building created for the Tennessee Centennial Exposition in 1897. He became a favorite sculptor of Southerners in 1897 after he sculpted a statue of Sam Davis, a Confederate spy who was executed; as no pictures of Davis survived, Zolnay based the likeness on Davis' relatives. Zolnay's numerous creations, scattered throughout the South, earned him the sobriquet "Sculptor of the Confederacy." Among his most memorable works are memorials to Confederate President Jefferson Davis and his daughter Winnie, affectionately known as the "Daughter of the South." Zolnay later served as the president of the St. Louis Plastic Arts Association and director of the Chicago School of Fine Arts. In 1903, Zolnay was appointed the director of the art department of the Louisiana Purchase Exposition and in 1909 he became the director of the Art Academy at University City, Missouri. He would eventually decide to move to New York City. Zolnay was one of the eight men led by Charles DeKay who founded the National Arts Club, becoming its first vice-president. He was also the president of the Saint Louis Plastic Artists Association and director of the Art Institute of Chicago. He received renown for his work for the Chicago World's Fair. At the University of Virginia he designed the pediment on an academic building, and crafted a bust of Edgar Allan Poe. He became active in Missouri, becoming the art department director of the Louisiana Purchase Exposition in 1903, and in 1909 he became the director of the Art Institute at University City, Missouri. On June 19, 1909, Zolnay gave a speech at the dedication of the Confederate Private Monument in Centennial Park in Nashville, Tennessee. Not only did Zolnay design the monument, but he also donated $500 to build it. Zolnay also designed the bust of Confederate veteran Edmund William Cole, which was installed in Kirkland Hall, the administration building of Vanderbilt University in Nashville. In 1913 Zolnay moved his studios to Washington, D.C. Beside his sculptural activity, he also delivered lectures on Romania, illustrated with traditional Romanian music and by lantern slides, at the Smithsonian Institution and did illustration work for the two volumes of the book The Roumanians and Their Lands issued by the Roumanian Relief Committee of America in 1919.
Personal life
Zolnay married Abigail Rowan Gillim on November 23, 1902. She was a Southerner; her parents had come from Ireland and settled in Kentucky. They had two daughters, Margaret and Elisabeth. Zolnay died on May 1, 1949 at his residence on the Upper East Side of Manhattan.