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.
Sometimes when I wake up it feels like I am at sea watching a big ocean liner pass by. It is the view from my home in one of the two stepped concrete apartment blocks that make up the Brunswick Centre in Bloomsbury. When you visit skip the chain stores of the shopping centre below (except for the excellent Renoir Cinema) and instead get an invitation to one of the small but gorgeous flats with their winter gardens or just wander through the spectacular concrete A frames and across the vast sun drenched terraces on podium level.