Mentioned by standard.co.uk
The best things to do in London for free
"If a trip up to the stunning viewing gallery of one of London’s tallest buildings sounds like a pocket drainer, think again. Situated inside a glass oasis at the top of the “Walkie Talkie”, Sky Garden is London’s highest public garden, filled with greenery and boasting panoramic views of the capital. It’s totally free to head up there, but you’ll need to book in advance, with post-lockdown visits starting up again from July 29."