1845 London Panorama
In 1845 the London Illustrated News published a panorama of London. IanVisits.co.uk has used the CASA GMapCreator to turn it into map tiles and create a Google Map of the illustration.
Via: Digital Urban
World's Largest Geoglyph
In the USA someone claims to have driven 12,238 miles across 30 states to create a geoglyph that says 'Read Ayn Rand.'
Nick Newcomen says he created the geoglyph over 30 days. He tracked the journey with his GPS logger, turning it off between letters, and then uploaded the track to Google Earth.