Every time I go to London, I will take out the time specially, even when the time period is heavy, even if I guarantee that the time is short, I will only watch two hours, or I will not know how to watch more than a day. For those who like art, history, culture, especially oil painting, the National Gallery is simply paradise! There are many stations nearby, and there are subways. You can walk to Piccadilly, very close; it is also a few steps to the 15th old bus station; and it is the only place with the traffic sign;