Located minutes from Washington D.C., Arlington National Cemetery has many visitors year round. You can visit the Tomb of the Unknown Soldier, Visitor Center, Changing of the Guard, Memorial Arboretum, John F. Kennedy's Grave Site, and the Memorial Ampitheater. Download the ANC Explorer application to your phone so you can experience history and gravesight locator. If you are driving, stop by Iwo Jima Memorial on your way.
You can drive and park or take the metro station stop: Arlington National Cemetery. Looking for a rewarding experience, check out "Wreaths across America" for volunteering.