From Cape Town, South Africa.
USA (2007) - California, Nevada, Utah, Arizona, Kansas, Missouri, Iowa, Wisconsin and Ohio.
Canada (2007) - Toronto and Ottawa.
Thailand (2007 and 2009) - Bangkok and Phuket in 2007. Bangkok, Krabi and Phuket in 2009.
Scotland (2010) - Edinburgh and Isle of Skye.
Namibia (2000 and 2011) - Hobas & Ai-Ais on both occasions hiking the Fish River Canyon.
New Zealand (2011) - Auckland, Rotorua & Wellington (with a few smaller towns) on the North Island.
United Arab Emirates (2011) - Dubai and Abu Dhabi.
USA - California, Arizon... full info