You might think you already know London. World famous sights like the Tower of London and Buckingham Palace. Top class museums like the British Museum and the National Gallery.
Air travel is about getting from point A to point B as fast as possible. Rail travel, on the other hand, is about so much more, especially in the winter when you can cozy up in a blanket with a hot beverage and take in the snowcapped mountain views everywhere from the Canadian Rockies to remote stretches of Russia on the Trans-Siberian Railway.