Today, the Supreme Court has its own building. Each of the nine justices has offices in the building. Plus, a staff of assistants.
The first time the Supreme Court met was 1790. Back then the justices didn’t have a courtroom. They didn’t even have any cases. The United States was very young at the time. (It had won its independence from Britain only recently.) So it wasn’t clear how the court would work. But one thing got settled right away. Back in Britain, judges wore (and often still wear) white wigs. One of the newly appointed justices to the first-ever U.S. Supreme Court showed up wearing a powdered wig in the British style. He was mocked badly on the street. You can guess he was the last Supreme Court justice to make that fashion mistake.