The visitor centre of the Capitol needs to pass the security check before it can enter. It is suggested to start visiting around 9 o'clock to avoid queuing. To visit Capitol Hill, you need to make an appointment in advance. There are many students to visit. Usually you need to queue up, sign in at the reception center, pick up your visitor's card (sticker), go in to see the film one by one, and visit the pavilion one by one.