One of London's tucked away gems, best known for its Winter skating rink, it also houses the Courthould Gallery. I love the buildings, there a few such grand pieces of coherent period architecture in the city. This version of the complex dates from 1770, but the site has historical significance from a considerable time before that. It was named after the Duke of Somerset who was the protector of England while King Henry VIIIs son Edward VI was in his minority.