The Sky Garden is a triple-level space at the top of 20 Fenchurch Street (also know as the Walkie-Talkie due to its eccentric yet familiar shape). The huge gardens featuring a wide array of vegetation are open for free to the public and offer incredible views of the city. There is an open air terrace on which you can get the full force of the sun on your face. It is worth getting ahead of the crowd and visiting now to witness those lovely spring mornings from such a great height. There is a bar, a reasonably priced brasserie and a fine dining seafood restaurant in the gardens, and as word gets around it is worth telephoning ahead to book your table (the staff are also really lovely and can't do enough to help you).