 The earliest existing houses in the district, in the Greek Revival style, date to 1842–43, when the city's residential development was first moving north of 14th Street, but the major growth in the area occurred in the 1850s.Fashionable houses were still being built as late as 1883, when Richard Morris Hunt's Sidney Webster House at 245 East 17th Street – now the East End Temple synagogue – was completed, but already German and Irish immigrants, had begun moving into new rowhouses and brownstones in the neighborhood, followed by Jewish, Italian and Slavic immigrants.Other than Beth Israel, other hospitals were located in the neighborhood as well.