David Harewood and Lorraine Burroughs star in London's West End production of The Mountaintop, which is expected to open with a new cast on Broadway this fall. Tristram Kenton hide caption

itoggle caption Tristram Kenton

A lake at the the Wind River Range, a mountain range of the Rocky Mountains in western Wyoming. Portions of the range are also inside the Wind River Indian Reservation. summitcheese/Flickr hide caption

itoggle caption summitcheese/Flickr

A Pennsylvania state trooper and plant security guards stand outside the closed front gate to the Metropolitan Edison nuclear power plant on Three Mile Island near Harrisburg, Pa., in 1979. Paul Vathis, File Photo/AP hide caption

itoggle caption Paul Vathis, File Photo/AP

The north entrance to the Greenbrier gives no clues to a secret bunker for Congress. Courtesy of The Greenbrier Resort hide caption

itoggle caption Courtesy of The Greenbrier Resort

Young Laborers: Most of the garment workers in the Triangle Shirtwaist factory were young, immigrant women. On March 25, 1911, the New York City building caught fire, and 146 workers lost their lives in one the country's worst workplace tragedies. Courtesy HBO hide caption

itoggle caption Courtesy HBO