The National Gallery is an amazing place to visit if you’re in London. It has a stunning collection of paintings that date from the middle ages onwards and is a wonderful place to spend a few hours. Better yet, because London’s museums are largely free, you can pop in for an hour or two and have a quick look round, then come back a day or two later for a second bite of the cherry.
When you do visit don’t just look at the paintings. The building itself is beautiful and well worth taking a look at.