The Changing of the Guard at Buckingham Palace is a ritual so stiff and serious, it’s like watching a ballet performed by robots who hate crowds. Get there early, or you’ll only see the back of a tall man’s bearskin hat from three blocks away. Pro tip: stand near the gates, but don’t wave, or the guards might break character and sneeze.
Speaking of palaces, Hampton Court is a maze. Not just the literal hedge maze (which is delightfully confusing and will test your marriage), but the whole place is a time warp. You can see where Henry VIII ate turkey legs and where his wives’ spirits supposedly still moan about their necks. It’s history, but with more gift shops and less plague.