The BT Tower is not open to the public, but can be visited during Open House each September.
You must enter the ballot for tickets to visit during Open House.
The BT Tower (previously known as the London Telecom Tower) is a telecommunications tower, which also used to host viewing galleries and a rotating restaurant.
Although you can't visit the BT Tower anymore, there are lots of other venues with great views across London, including The View from The Shard, Sky Garden and the Coca-Cola London Eye.
Take a look at London's best panoramic views.
BT Tower restaurant
Alternatively, enjoy a drink at one of London's rooftop bars.
When to visit the BT Tower
Once a year, the BT Tower opens to the public as part of Open House. The event takes place in September and due to high demand, you need to enter a ballot for tickets.