I love Viator - since happening upon the site i have used it for tours on every trip i have taken and i have constantly recommended Viator to both friends and other travellers i have met on the road. At times i have thought i should hold shares in the company i have recommended it so frequently. WHY? - because it successfully takes the work out of finding interesting, affordable tour opportunities when in foreign locations. Doing a tour is such a great way to get to know a place. I am very keen on walking and this kind of tour features prominently in the tours offered by Viator. I remember being blown away by a walking tour I did in the back streets of Athens - just fantastic and another in London - what a way to meet a city! Previously i would have trawled for hours looking for such small niche market tours. Thank you Viator.