What better way to see London's sights than from the world's most famous waterway, the Thames! Close to many major tourist areas, this ultimate experience lets you venture down river to The Thames Flood Barrier. Travel past wonderful historical Greenwich (the cradle of navigation) & on to modern wonders such as the O2 & finally the Thames Flood Barrier in some customised & ultra-zippy boats. Your guide will provide commentary on the wonderful sights as you race along.