Millbank Tower is home to Altitude 360º which is creating the pop-up gallery for use in August. Stand-up comics will be on hand to talk about the views across London and point out key landmarks.
The views will be significant: the 118m Millbank Tower is not only one of the capital’s tallest buildings, but is also Grade II listed.
"It really does offer a completely different way for visitors from home and abroad to view our amazing capital," said Altitude London marketing director Peter Kerwood.
The gallery is open Fridays to Sundays from 13 to 29 August.
To win tickets to the viewing gallery simply tell register and tell Event below what your favourite view is in London and why?