Analysis of Flickr photos could lead to online travel books:• The top 25 most photographed cities in the Flickr data are (in order): New York City, London, San Francisco, Paris, Los Angeles, Chicago, Washington, D.C., Seattle, Rome, Amsterdam, Boston, Barcelona, San Diego, Berlin, Las Vegas, Florence, Toronto, Milan, Vancouver, Madrid, Venice, Philadelphia, Austin, Dublin and Portland.
• The top seven most photographed landmarks are (in order): Eiffel Tower, Paris; Trafalgar Square, London; Tate Modern museum, London; Big Ben, London; Notre Dame, Paris; The Eye, London; and the Empire State Building, New York City.
Interestingly, the Apple Store in midtown Manhattan was the fifth-most photographed place in New York City -- and the 28th-most photographed place in the world.
