These two coders used old photographs to make a Google Street View map of San Francisco in the 1800s -- and it's mesmerising

If you’ve ever wondered what it’d feel like to travel back in time and walk the streets of San Francisco, this might be the closest you’ll get — at least for now.

Two developers, Dan Vanderkam and Raven Keller, had the brilliant idea to take all the old photographs from the San Francisco Historical Photograph Collection and put them on a interactive map. This map functions similarly to Google Street View, except for when you zoom in on a particular place it gives you photos from as far back as 1850.

The project, which is called OldSF, lets you manipulate a slider to change the range of years (it goes from 1850 all the way up to 2000). The pair have geocoded about 13,000 images.

Visit the site here, or look below for some of the best photos we saw from the 1800s, marked with their locations in the city.

Point Lobos Avenue and 43rd, Dick's Saloon, 1890

SAN FRANCISCO HISTORY CENTER, SAN FRANCISCO PUBLIC LIBRARY

Central Park, 8th and Mission streets, around 1887

SAN FRANCISCO HISTORY CENTER, SAN FRANCISCO PUBLIC LIBRARY

Group of people overlooking the Cliff House from Sutro Heights, 1890

SAN FRANCISCO HISTORY CENTER, SAN FRANCISCO PUBLIC LIBRARY

Bush Street, west of Kearny, 1877

SAN FRANCISCO HISTORY CENTER, SAN FRANCISCO PUBLIC LIBRARY

Palm Avenue in Jefferson Square, 1881

SAN FRANCISCO HISTORY CENTER, SAN FRANCISCO PUBLIC LIBRARY

View from City Hall, looking South, down 8th st. at Central Park, 1896

SAN FRANCISCO HISTORY CENTER, SAN FRANCISCO PUBLIC LIBRARY

Woodward's Gardens, 1864

SAN FRANCISCO HISTORY CENTER, SAN FRANCISCO PUBLIC LIBRARY

California Street Looking East From Montgomery, 1865

SAN FRANCISCO HISTORY CENTER, SAN FRANCISCO PUBLIC LIBRARY

Exterior of the What Cheer House on the south side of Sacramento Street below Montgomery, 1865

SAN FRANCISCO HISTORY CENTER, SAN FRANCISCO PUBLIC LIBRARY

Building on northeast corner of Front and California streets, 1890

SAN FRANCISCO HISTORY CENTER, SAN FRANCISCO PUBLIC LIBRARY

Baldwin Hotel Bar, 1880

SAN FRANCISCO HISTORY CENTER, SAN FRANCISCO PUBLIC LIBRARY

Steuart Street, 1864

SAN FRANCISCO HISTORY CENTER, SAN FRANCISCO PUBLIC LIBRARY

J. C. Flood Mansion, California Street, 1886

SAN FRANCISCO HISTORY CENTER, SAN FRANCISCO PUBLIC LIBRARY

St. Luke's Episcopal Church, southeast corner of Sacramento street & Van Ness, 1895

SAN FRANCISCO HISTORY CENTER, SAN FRANCISCO PUBLIC LIBRARY

Sacramento St. and Van Ness Avenue, 1887

SAN FRANCISCO HISTORY CENTER, SAN FRANCISCO PUBLIC LIBRARY

Woodward's Gardens, 1874

SAN FRANCISCO HISTORY CENTER, SAN FRANCISCO PUBLIC LIBRARY

Miss Lake's School for Young Ladies, corner Sutter and Octavia Streets, 1890

SAN FRANCISCO HISTORY CENTER, SAN FRANCISCO PUBLIC LIBRARY

Howard Street, looking east from Sixth Street, (horse car), 1866

SAN FRANCISCO HISTORY CENTER, SAN FRANCISCO PUBLIC LIBRARY

1919 California Street, 1887

SAN FRANCISCO HISTORY CENTER, SAN FRANCISCO PUBLIC LIBRARY

Southern Pacific Passenger Depot, 1879

SAN FRANCISCO HISTORY CENTER, SAN FRANCISCO PUBLIC LIBRARY

Cablecar at South Park, 1865

SAN FRANCISCO HISTORY CENTER, SAN FRANCISCO PUBLIC LIBRARY

Fire Engine No. 13 at 1458 Valencia Street, 1884

SAN FRANCISCO HISTORY CENTER, SAN FRANCISCO PUBLIC LIBRARY

Shotwell Street, near Twentieth. Snowfall, 1887

SAN FRANCISCO HISTORY CENTER, SAN FRANCISCO PUBLIC LIBRARY

The Willows, 18th & Valencia Sts., 1864

SAN FRANCISCO HISTORY CENTER, SAN FRANCISCO PUBLIC LIBRARY

Musicians performing outside the 'Haunted Swing' at the Midwinter Fair in Golden Gate Park, 1894

SAN FRANCISCO HISTORY CENTER, SAN FRANCISCO PUBLIC LIBRARY

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