The Second Avenue Elevated train line ran above Second Avenue the full length of the avenue north of 23rd Street, and stood from 1880 until service was ended on June 13, 1942. South of Second Avenue, it ran on First Avenue and then Allen and Division Street. The elevated trains were noisy and often dirty (in the 19th century they were pulled by soot-spewing steam locomotives). This depressed land values along Second Avenue during the late 19th and early 20th centuries. Partially because of the presence of the El, most buildings constructed during this era were working class tenements. The line was finally torn down in 1942 because it was deteriorated and obsolete, and the cost of World War II made upkeep impossible. Second Avenue maintains its modest architectural character today, despite running through a number of high income areas.