Greenwich
This, too, was a fun excursion outside the main part of London. It was weird, because we could see the hubub of the city, yet it was so quiet and peaceful in Greenwich. We loved the Naval museum, but we couldn't take any pictures. We got to see the ball drop at the Royal Observatory at 1:00pm - it does it every day and our timing was perfect. We even got to do the traditional picture straddling the Prime Meridian, with one foot in the western hemisphere and one in the eastern.