Starting at http://soakinginsoutheastasia.blogspot.co.at/2007/10,
/11, /12, 2008/01, /02,...
- ihotspring.com: Natural hot springs in Europe, USA (California… ), Japan
some hot springs with links to Google-Earth and Google-Maps
- Maps of free hot springs in Italy and Greece (Italian language)
- swimmingHoles.org a guide to about 1,200 cold, warm or hot swimmingholes in the USA and Canada, with an interactive map