Sebastopol House Historic Site is an antebellum Greek Revival house built of concrete, located in Seguin, Texas, United States. Joshua W. Young built it between 1854 and 1856 for his sister, Catherine LeGette. Today Sebastopol is one of some 20 surviving buildings that give Seguin the largest concentration of early 19th century structures in the U.S. Jr. bought the house in 1874 and it remained in the Zorn family until 1961. Zorn was mayor of Seguin from 1890 to 1910, and played a major role in establishing the first system of free public schools in the town.