The New York Public Library has debuted an amazing new online tool that makes it a whole lot easier to view photos from the institution’s huge digital archive. OldNYC allows you to zoom in and out neighborhood-by-neighborhood, block-by-block to see images where they were taken. You can see a few examples below. Want to know what your street looked like in the 1930s? OldNYC is for you. See how it works here.