In the 1920s, New Castle enjoyed its greatest prosperity. The landscape of the city was transformed with the building of many beautiful structures, some of which still stand, such as the Scottish Rite Cathedral, St. Mary's Church, and the Castleton Hotel. The city also established its identity. New Castle is known both as the "hot dog capital of the world" and the "fireworks capital of America". Its chili dogs are the product of Greek immigrants who came to New Castle in the early 20th century and established restaurants along with their homes. The renown for fireworks is credited to two local fireworks companies of international stature, S.Vitale Pyrotechnic Industries, Inc. (Pyrotecnico) and Zambelli Internationale. The first fireworks manufacturer in New Castle was Leopold Fazzoni, who owned and operated the Fazzoni Brothers Fireworks Company. Fazzoni came to New Castle from Italy in 1886 and worked in the tin mills to earn enough money to start his own business. He was issued the first certificate for fireworks manufacturing in the state. Of the people who worked with the Fazzoni family, many founded their own businesses, such as Paul Rozzi, Jacob Conti, Constantino Vitale, and Joseph Zambelli.