The Tomb of the Unknowns is guarded 24 hours a day, 365 days a year, and in any weather by Tomb Guard sentinels. Sentinels, all volunteers, are considered to be the best of the elite 3rd U.S. Infantry Regiment , headquartered at Fort Myer, Va.
Arlington Cemetery - FREE admission. **Must-see: Changing of the guard at the top of the hour every hour. Rules to know: Do NOT talk, laugh, or make noise during the changing of the guard. Stand and show respect. It's a solemn experience.**