Dr. P.A. Smithe was sent by the American Red Cross as a doctor and surgeon to work at a hospital in Vienna. He sailed to Europe in December 1915 and returned home in August 1916, according to his daughter, who donated his images to the National World War I Museum. Photo: Turkish army, including cavalry, infantry and artillery. (Photo by Dr. P.A. Smithe/National World War I Museum, Kansas City, Mo.)

The Upside Down Room, with furniture on the ceiling and real beds and chairs that open out of the floor, is one of many creative and even bizarre rooms shown photographed February 14, 2002 at the Propeller Island City Lodge in Berlin, Germany. Owner, artist and musician Lars Stroschen designed the rooms of the hotel, which has 28 rooms and has been open since June, 2001. (Photo by Sean Gallup/Getty Images)

Dayang Nur Atikah, poses as she is announced as the winner of the Supermodel of the World Malaysia 2011 at Sepang International Circuit on April 10, 2011 in Kuala Lumpur, Malaysia. Dayang Nur Atikah, 18, will represent Malaysia at the 30th anniversary of the Ford Models Search in New York. (Photo by Syamsul Bahri Muhammad/Getty Images)

Visitors look at a plastinated gorilla on the opening day at the Body World Animals exhibition at the Cologne Zoo on April 15, 2011 in Cologne, Germany. The exhibition is by Gunther von Hagens, who uses a special process to preserve real bodies, whether animal or human, in order to display the inner organs, muscles and other physical elements. The exhibition will be open to the public until September 30.

A pedestrian walks by an Apple Store following an announcement that Apple has become the world's most valuable brand on May 9, 2011 in San Francisco, California. In a report released by London based Millward Brown, Apple Inc. has surpassed Google to claim the top spot in a global ranking of brand value this year with an estimated value of more than $153 billion up 84 percent from last year. (Photo by Justin Sullivan/Getty Images)

A protester sprays paint on the window of a bank during a rally against Expo 2015 in Milan, Italy, April 30, 2015. The Milan Expo will open in the city on May 1. Officials are counting on some 20 million visitors to the six month-long exhibition of products and technologies from around the world. (Photo by Stefano Rellandini/Reuters)

The World’s Smallest Horse according to Guinness World Records is Thumbelina from Missouri, but another tiny horse named Einstein.

Akram Abu al-Foz places a painted empty shell on top of a Christmas tree he decorated from empty shells he collected in the rebel held besieged city of Douma, in the eastern Damascus suburb of Ghouta, Syria December 23, 2016. (Photo by Bassam Khabieh/Reuters)