This is truly one of London’s best-kept secrets (so don’t tell anyone!). The Pergola is a beautifully designed raised walkway, overgrown with flowers and vines and set amidst lush gardens. Located high on a hill, the view is striking. It’s the perfect place for a picnic or a romantic stroll. Tip: there are many visitors on summer weekends, but if you go early in the evening during the week, you might have the place all to yourself!