Arlington Cemetery, officially known as Arlington National Cemetery, is a military cemetery located in Arlington, Virginia. Established during the American Civil War, it serves as the final resting place for over 400,000 military veterans and their families. The cemetery covers approximately 624 acres and is known for its beautiful landscapes and significant memorials. One of the most notable features of Arlington Cemetery is the Tomb of the Unknown Soldier, which honors unidentified soldiers who died in combat. The cemetery also includes the graves of prominent figures, such as President John F. Kennedy and Robert E. Lee, making it a site of historical importance.