Burj Khalifa (Arabic: برج خليفة "Khalifa Tower"), known as Burj Dubai prior to its inauguration, is a skyscraper in Dubai, United Arab Emirates, and the tallest man-made structure ever built, at 828 m (2,717 ft). The panorama above is no longer available in full resolution as there was too much traffic on the guy's site. However, he did put up a fascinating video of zooming and panning around in the 2.3 Gigapixel photo:
Or, go play around yourself - panning and zooming into this remarkable photograph. If you do go zooming (and you really should) then click on the "Launch Full Screen Viewer" link, maximize your browser window, and start double clicking to zoom or dragging to pan. Fun!