David Piper is a Brit going around the world but with a twist. Instead of a continuous journey, he does a section, returns home and then tackles the next leg a few months later. His goal is to ride 16,000 miles over 4 continents and you can read about his journey on his website, Tra-velo-gue. Here he is pictured in front of the citadel of Aleppo, in Syria.