Enjoy two of londons top activities in one day with this thames river cruise including the view from the shard choose a sightseeing cruise lasting from 30 minutes to three hours and take to the water enjoy sweeping views over top london landmarks including big ben the houses of parliament the london eye the oxo tower and st pauls cathedral and gain insight into centuries of british history then hop off your boat near the shard and gaze out over the rooftops from your vantage point hi