The BT Tower — known as the Post Office Tower in a previous life — has been closed to the public for over 30 years, since the end of the vertigo-inducing restaurant at the top.
On 9 October, for one night only, there is a rare chance for the public to take a trip to the revolving viewing platform on the 34th floor, and enjoy the panoramic view, while supping on a glass of bubbly and nibbling on a cupcake.
Tickets are £50 and can be booked here. The event is raising funds for RedR, an international humanitarian organisation which trains people in disaster-prone areas in lifesaving skills. Under 4s can go free, but contact the organiser directly to arrange a place.
When booking, there is a choice of four time slots, on the hour from 7pm - 10pm, ensuring that everyone gets at least 45 minutes to enjoy the view of London at night.
*UPDATE*: The event has now sold out. To be added to the waiting list, email email@example.com.
An evening at the BT Tower takes place on 9 October. Tickets are £50 and need to be prebooked.