Where are the six places that the U.S. flag always flies, 24 hours a day?

Answer 1

#1 The White House (Sept 4Th,1970)
#2 United States Marine Corp Memorial (Iwo Jima) -June 12,1961 Arlington, Virgina

#3 United States Custom Ports of entry- They're open 24 hours a day every day. Since May 5Th,1972

#4 The Grounds of the National Memorial Arch in Valley State Park- Valley Forge Pennsylvania (July 4Th,1975)

#5 On the Green of the town of Lexington, Massachusetts (November 8TH,1965)

#6 Washington Monument , Washington DC note 50 flags of the United States are displayed at the Washington Monument continuously. Since July 4TH, 1971.

Answer 2

One of them is Flag Plaza, in Pittsburgh PA where the Boy Scouts keep it going.