Fort Knox is famous for being the site of storage for much of the United States' gold reserves. As of 2021, it holds approximately 147.3 million ounces of gold, worth over $240 billion. The fort also stores important historical documents and artifacts such as the Magna Carta, the Constitution of the United States, and the Declaration of Independence. Additionally, it serves as a location for the storage of other valuable items for the U.S. government, such as rare coins and foreign currency. Overall, Fort Knox is a highly secure and protected location that safeguards some of the most important assets of the U.S. government.