Mentioned by Londontopia
Top Ten London: Top 10 Most Romantic Places in London
"Hyde Park is the largest of London’s four Royal Parks at 350 acres, which means there is a lot to see and do throughout on your romantic visit. Whether you two like debate and want to take in Speakers’ Corner or wind around the Serpentine lake, there are romantic activities to suit all types throughout Hyde Park. Several hotels also border the park with great views onto it, so consider booking one of them to have a beautiful view every morning."