The 1835 Great Fire of New York destroyed whatever historical buildings were left from the early times of New Amsterdam/New York. Much of the street was destroyed again in the Great New York City Fire of 1845. In the first two hours of the fire's spread, it reached a large multi-story warehouse occupied by Crocker & Warren on Broad Street, where a large quantity of combustible saltpeter was stored. In July 1863, the New York Draft Riot in Manhattan became the largest civil insurrection in American history apart from the Civil War. Upon the outbreak of this riot, Jacob B. Warlow and his police unit contended with a mob on Broad Street, with Warlow also helping quell other riots throughout the city from his station house on Broad Street. As the area became the center of financial activity, all smaller buildings in turn were replaced with grand banks. Most of the structures that stand today date from the turn of the 20th century.