History geeks and time-travelers from the 1800s, get ready to have your days made: Old NYC combines Google Maps with photographs from the New York Public Library to create a timewarped version of Street View.

Developer Dan Vanderkam compiled over 80,000 photos from the NYPL's "Photographic views of New York City, 1870s-1970s" collection and plotted them, using geocoding, to their corresponding origins on an interactive map of the five boroughs.

The creators of the interactive map say its goal is "to help you discover the history behind the places you see every day."