As London’s oldest food market, Borough Market has been serving the people of Southwark for 1,000 years. Located next to London Bridge, the market is an easy location for breakfast or lunch. Favourite is Börek with home made hummus or a freshly made pasta dish.
The Greenwich Observatory with its green laser beam can transfigure any night sky. If you decide to cross the Thames via the foot tunnel, make sure you look out for the green ray. You can be on one side of the meridian in a minute, and cross to the other side on the next, without even realising it.
The walk along the South Bank from Westminster to Tower Bridge will take you past a plethora or interesting sights and cultural hotspots. There's always something interesting going on too.