What court has thirteen courts?

Federal circuit courts are normally the trial courts and courts of original jurisdiction in the federal system.

Under most circumstances the US District Courts are the federal trial courts of general jurisdiction; however, they also hear appeals of federal agency decisions made by Administrative Law Judges...

Appellate courts

Both federal and state courts have jurisdiction over criminal cases.

The term "court of last resort" generally refers to the Supreme Court (in the USA) or the highest court in the land (in other countries). This nickname applies because you cannot appeal any higher...