Scott Howard spent two days in 2005 taking almost 200 photos from an area near the Adler Planetarium to create this gigantic image of the Chicago skyline at night. Using a piece of software called Zoomify, the images were then stitched together and packaged in a Flash project that allows you to zoom in — waaaaaaay in — on any part of the image.
He used the same technique on two more stunning locations: Sydney, Australia, and Machu Picchu in Peru. Impressive! [via]