At the top of 20 Fenchurch Street (aka the Walkie-Walkie), Sky Garden is London’s highest public garden. This rooftop garden is made up of three levels dedicated to vibrant greenery, particularly Mediterranean and South-African plants, as well as herbs and other colourful blooms. Sky Garden also has several restaurants and bars beneath its domed ceiling, so you can sip a floral cocktail while you enjoy the foliage - and those ace skyline views.