Thames River Sightseeing Cruise with Afternoon Tea. While in London, combine an iconic British tradition with a unique sightseeing excursion on an afternoon tea cruise! Spend a luxurious 1.5 hours enjoying a unique dining experience with family and friends on the River Thames. As you cruise from Tower Pier to Westminster, indulge in tea, freshly prepared cakes and sandwiches, and view London’s great landmarks including the Tower of London, the Houses of Parliament and the London Eye. Book and Save 25% Off Thames River Sightseeing Cruise with Afternoon Tea.