To visit Congress, you need to make an appointment. Please make an appointment in advance to facilitate the visit. It's only the sphere part that's open. It's the work of British designers. The design is exquisite. Visitors can walk up the sphere with the top open and the Congressional hall can be seen in the glass below the sphere. Below the sphere is an introduction to the Capitol Building. This is not a new building, but a combination of old and new. It should be noted that the original building of the German Parliament Building was badly damaged during World War II. After reconstruction, it retained the outside, merged with the new part and added the spherical part.