Federal courthouses are buildings where federal courts conduct legal proceedings. These courts handle cases involving federal laws, disputes between states, and cases involving the federal government. Each state has at least one federal courthouse, and larger states may have several. Inside a federal courthouse, you can find courtrooms, judges' chambers, and offices for attorneys and court staff. The United States District Courts are the primary trial courts, while the United States Court of Appeals hears appeals from these courts. Federal courthouses play a crucial role in upholding the law and ensuring justice at the national level.