Three views of Sixth Avenue and 20th Street

In 1901, when this first photo was taken, Sixth Avenue and 20th Street was the center of the city’s posh shopping district.

It was part of the fabled Ladies’ Mile, where stores like Siegel-Cooper, Adams & Co., and Hugh O’Neill’s Dry Goods Store sold fashion and furnishings.

“By 1915, all these stores had failed, merged, or moved farther uptown,” states the caption to the photo, which was published in New York Then and Now.

Here’s the crowd of well-dressed, well-to-do women in front of O’Neill’s. A hansom cab waits, a gas lamp will light the street at dusk, and the Sixth Avenue El is hurtling down the tracks, bringing smoke and more shoppers to the 18th Street station.

By 1975, when the second photo (also from New York Then and Now) was shot, the area had become grungy and grim.

It hadn’t been a viable shopping district of any kind at least since the El was torn down in 1939. The gas lamppost has been replaced, and the lovely cast-iron buildings support light manufacturing and small offices.

Today, in 2012, it’s a bustling shopping strip again—and residential area too. The O’Neill building has been renovated into pricey luxury condos.

The ground-floor store is home to a bank branch, of course.