Top of page

Archive: May 2023 (2 Posts)

A street map of Paris dated 1870

Exploring Haussmannian Paris

Posted by: Cynthia Smith

During the 19th century Paris underwent a major urban renewal. I am focusing on some of the maps that were published before, during, and after the renovation of Paris. Before the renovation, the residents of central Paris suffered from cholera epidemics, overcrowding and a high infant mortality rate. The Bievre River, which flowed into the …

The Hungarian Parliamentary Building sits on the banks of the Danube. The GeoTIFF locates the building about 150 meters to the northeast of its true location.

The Secret Life of GeoTIFFs

Posted by: Carissa Pastuch

This is a guest post by Rachel Trent, Digital Collections and Automation Coordinator in the Geography and Map Division. The image below is of a TIFF file, but not just any TIFF. Hidden inside are coordinates that bind the image to a specific place on Earth. For every pixel in the image, an estimated latitude …