A member of the German wireless police picks up signals on the radio equipment he carries on his back, while his colleague takes notes. (Photo by General Photographic Agency/Getty Images). Circa 1925

A workman takes a siesta on a girder during the building of Radio City, the city of New York spread out below. (Photo by General Photographic Agency/Getty Images). Circa 1933

Models dressed as bandaged nurses take part in a promotional event for the film “Silent Hill” on June 22, 2006 in Tokyo, Japan. (Photo by Junko Kimura/Getty Images)

Burmese monks take their yearly exam December 13, 2011 in Bago, Myanmar. Around 1,400 monks from Bago province took part . (Photo by Paula Bronstein /Getty Images)

Visitors to Castle Combe take photographs in the village that was recently featured in Steven Spielberg's latest film, the wartime drama, War Horse, on January 10, 2012 near Chippenham, England. (Photo by Matt Cardy/Getty Images)

A woman reacts as she uses a selfie stick to take a photo of herself at Tiananmen Square in Beijing, China, Thursday, April 30, 2015. Selfie sticks are gaining popular in China, and many people are using them at popular tourist destinations. (Photo by Andy Wong/AP Photo)

Guests arrive for the opening ceremony of the 23rd Life Ball in Vienna May 16, 2015. Life Ball is Europe's largest annual AIDS charity event and takes place in Vienna's city hall. The Life Ball is a charity gala to raise money for people living with HIV and AIDS. (Photo by Leonhard Foeger/Reuters)

In this photograph taken on June 28, 2015, a hiker in Hong Kong takes a picture of the city from a walking trail. The southern Chinese territory is crisscrossed by more than 180 miles of designated hiking trails. (Photo by Alex Ogle/AFP Photo)