Boats and Meridians

The National Maritime Museum has an incredible array of real boats, toy boats, model boats, and memorabilia about Britain and her naval history, including Nelson's uniform coat and pigtail when he was shot.  

The Royal Observatory Greenwich is located at 0 degrees 0'0" Longitude, the Prime Meridian of the World, which defines Greenwich Mean Time (GMT).  There was a very long line of people who wanted to get their picture taken standing over it.