Inner tubing tour through the canals and tunnels of an old sugar plantation in Hawaii
St Croix Lake, Les Gorges du Verdon, Provence, France
Quinta da Regaleira-Sintra ~ Portugal
World's most amazing hotel plunge pools
St. Beatus Caves, Switzerland.
Grand Canal, Venice, Italy
Water slide through Shark Tank in Vegas travel-destinations
Flume hike in Franconia Notch State Park, New Hampshire, USA (by Mike Cialowicz).