To mark Labor Day, we wandered a bit off the path of the tours (going two blocks east of Washington Square Park, on the northwest corner of Greene Street and Washington Place) to the site of 1911's Triangle Shirtwaist fire.
The blaze took 146 lives, most of them young female garment center workers. The workers were locked into their workplace and many jumped from ten floors up to try and escape the flames.
It remains the city's deadliest industrial accident and led to changes in the fire codes, factory safety and spurred the growth of the International Ladies Garment Workers Union.
The building is both a national and a city landmark with three separate plaques marking the tragedy.