The United Kingdom's sightseeing density rivals any country in the world. The great museum collections of London — the British Museum, the National Gallery, the Tate Modern, the Victoria and Albert — are all free of charge and individually world-class. Edinburgh's castle and old town, the Roman Wall at Hadrian's, the Lake District's fell walking, Stratford-upon-Avon's Shakespeare heritage, and Stonehenge each represent separate and complete sightseeing days. The industrial heritage of the north, the cathedral cities of the west, and the neolithic monuments of Orkney extend the geography into every period and register. Tours by locals often make the place feel warmer, sharper, and more personal. It really hits differently.