Ever heard of Woodhenge or Clayhenge? Of course you haven't! That's because, of all the henges in the world, Stonehenge is the undisputed champion. Full of mysteries - both mystical and architectural - a visit to Stonehenge is guaranteed to leave you marveling at the fortitude, ingenuity and resourcefulness of the ancients.
At Queen Victoria's behest, the State Rooms of Kensington Palace were opened to the public in 1899, on her 80th birthday. Since then it's been both a private residence for the royal family and a public museum. In fact, it's where Prince William lives with the Duchess of Cambridge and their three kids. Though you won't bump into them in the hallway, a visit here is still a fascinating window into the lives of royals past and present.
The Royal Observatory is the home of Greenwich Mean Time (GMT) and the Prime Meridian, perched up high in leafy green Greenwich. See where time starts and stops.