CityCruises.com is the leading tour boat operator on the River Thames in London. The best way to see London is from the River Thames. No one offers you more ways of enjoying a cruise on the Thames than City Cruises, carrying more than 3.1 million people annually on its extensive sightseeing, entertainment and private hire services. City Cruises fleet of sightseeing boats is one of the most modern on the river and designed especially with the sightseer in mind. That's why you'll find all the sightseeing boats feature large, open-air decks, which are the best way to see London pass by, even on the days that the sun doesn't shine! Sightseeing Cruises run seven days a week, departing Westminster, London Eye, Tower and Greenwich Piers.