The U.S. Supreme Court building turns 75 this year . A behind-the-scenes tour shows justices ' domain . Because of security concerns , public no longer uses traditional main entrance . Score: 6
The U.S. Supreme Court building turns 75 this year . A behind-the-scenes tour shows justices ' domain . Because of security concerns , public no longer uses traditional main entrance . With 600,000 volumes , the oak-paneled library is the court 's information center .