1. London Eye — South Bank
A slow, 30-minute rotation with views over Parliament and the Thames.
The London Eye's glass capsules take about 30 minutes to complete a rotation, rising high above the river with views of Parliament, Westminster and, on clear days, far across London.
It is one of the city's signature experiences for first-timers.
Good to know: Book online in advance; tickets at the door cost more.
Riverside Building, County Hall, London SE1 7PB