Those of you who enjoy discovering a city with Hop-on Hop-off bus tours can save 10% by using this coupon from City Sightseeing! City Sightseeing offers hop-on hop-off tours in 95 cities worldwide, including New York, Washington, London, Barcelona, Singapore, Dubai, Moscow, Berlin, Amsterdam and Melbourne. A complete list of all cities can be found … Continue reading City Sightseeing Coupon: 10% Discount on Hop-on Hop-off Tours