United States Government Arlington National Cemetery, Arlington, Virginia

Arlington Cemetery is a beautiful D.C. landmark which will humble and inspire guests of all ages. - Plan to spend 3 - 4 hours touring the Cemetery. The trail is 3 miles roundtrip. - FREE. Located on the Metro line. - Recommended as a Sunday morning activity for visitors, as it opens early. - Look out for the TourMobile. It may run you over. Don't bother riding it though. The walk is leisurely and you get the best experience on foot. - Bring water, a small snack, and your camera. - As with most D.C. activities, expect there to be crowds if you visit at the end of May / beginning of June. This is when high school trips are at their peak, and you'll encounter many apathetic teenagers on tour.