Three storeys of landscaped public gardens at the top of 20 Fenchurch Street - generally known as the Walkie Talkie building. Fantastic views across the capital from the floors 35-37.
You probably need to book this on line a couple of weeks before your visit, but if you turn up at a quiet time you might be lucky and get straight in.
UG: Monument 0.19km
OG: London Fenchurch Street 0.37km
UG: Bank 0.43km
Mon-Fri 10am-6pm Weekends 11am-9pm
Always check details regarding opening hours, accessibility and pricing before travelling.