Today is the 110th anniversary of the third worst conflagration to affect an American city in history: The Great Baltimore Fire of 1904.

According to the Fire Museum of Baltimore, some 1,231 and 1,200 National Guardsmen were needed as part of the effort. In about 30 hours, 140 acres of downtown Baltimore had burned, taking down 1,526 buildings and 2,500 businesses in its fury.