Westminster to Greenwich River Thames Cruise

This roughly 90-minute cruise follows the Thames eastward from Westminster Pier past some of London's most photographed riverside sights — the London Eye, the Tower of London, and Tower Bridge — before reaching Greenwich, home to the Cutty Sark, the Royal Observatory, and the Prime Meridian. Live commentary typically points out landmarks and history along the way, giving the trip a sightseeing function beyond simply the boat ride itself, and it offers a restful, seated alternative to walking the same route on foot.

With multiple daily departures, it's flexible enough to fit into most itineraries, and it appeals particularly to visitors wanting to combine central London sightseeing with a half-day trip out to Greenwich. Its moderate 82 must-see score reflects that it's a strong add-on rather than an unmissable standalone attraction.