Visit your favourite buildings from around the world and discover something new with 40 spot-the-difference puzzles.

Enjoy stunning shots of the world's favourite buildings in this phenomenal spot-the-difference photographic collection. Each of the 40 challenging puzzles will boost your observation skills while the fun, fact-filled captions will take you on your own architectural guided tour. Travel the globe, from Venice to Beijing, from London to New York. Marvel at the magnitude of the Taj Mahal and be wowed by many more architectural treasures.