> Fully open to the public Probably end up like the top floor of the walkie talkie. It's free to visit, but you need to book a ticket for a specific time well

> Fully open to the public Probably end up like the top floor of the walkie talkie. It's free to visit, but you need to book a ticket for a specific time well in advance (if you're visiting London it's a better visit than the Shard though, in all honesty).