For an interesting view over the rooftops on the eastern side of St Paul's Cathedral, take the lift to the top floor of a building so ultra modern, it upset Prince Charles and you will be rewarded with a view to St Paul's and the River Thames.
The terrace is open to the elements and at a similar level to the dome of St Paul's. Access is free of charge.
Food and drink is available at Madisons Bar and Restaurant and the rooftop is open from 6 am.