Temporary NYPD headquarters at a Burger King near the World Trade Center, September 11, 2001.

President George W. Bush aboard Air Force One after the 9/11 attacks, September 11, 2001

Prague residents throwing Molotov cocktails at a Soviet tank in Prague, August 21, 1968.

Joseph Ambrose, an 86-year-old World War I veteran, attends a parade at the Vietnam Veterans Memorial, wearing his original doughboy uniform that he used during the war. He is holding an American flag. It covered the casket of his son Clement, who was killed in the Korean War, 1982

An Eskimo family in front of their summer home, 1915

Leonid Brezhnev kissing East German leader Erich Honecker, 1979

Hiroo Onoda walks out of the jungle on Lubang Island after agreeing to surrender 29 years after the end of World War II, March 11, 1974

Tank Man waiting for the arrival of the tanks, June 5, 1989

Sámi People from Norway, 1900s-1920s

A Berlin crowd listens as a German officer reads the Kaiser's order for mobilisation, 1st August 1914

Photo taken inside the World Trade Center just after the second plane hit the WTC 2, September 11, 2001

An old lady eats a burger at Moscow’s first McDonalds, 1990

Family watches Soviet President Mikhail Gorbachev’s resignation speech on television, 1991

Winston Churchill waves to crowds in Whitehall in London as they celebrate Victory in Europe Day, 8 May 1945

Seattle Police cover their faces with masks during the Spanish flu pandemic, 1918

A Christmas Party in an underground shelter in London, December 25, 1940

Chechen's prayer by Mikhail Evstafiev - Chechen man praying during the battle of Grozny, 1995

Few minutes after the nuclear bomb was dropped into Nagasaki, 1945.

Soldiers hoist a piece of artillery up a cliff, 1917

Albert Einstein enjoying the summer in Long Island, New York, 1939.

JFK's daughter Caroline and RFK's daughter Kerry play under the Resolute desk in the Oval Office, 1963

Last Ottoman sultan Mehmed VI leaves the imperial palace, 1922.

Percival Lowell observing Venus in the daytime from the observer's chair of the 24-inch (61 cm) refracting telescope at Flagstaff, Arizona, 1914

A U.S. solider runs past a burning house in Saigon, 1968

50 years since the Munich Massacre: Two West German policemen, armed with Submachine Guns and wearing tracksuits, get into position on the roof of the building where armed Palestinian Terrorists were holding Israel Olympic team members hostage, September 5, 1972

A MiG-21 fighter that collided with an East German apartment building, 1975

Warships approach Provençal Coast, 1944

Dog completing a parachute jump during training, 1944

American soliders in the dense jungles of New Guinea, 1942

Mao Zedong and Dalai Lama walk together on 11 September 1954. China had occupied Tibet three years prior.

Austro-Hungarian Emperor Franz Joseph hunting, 1910

Child soldiers in a studio shot in the Finnish Civil War, 1918

Soviet Tank crashes into a building in Prague, 1968

Juho Pirttiaho as the first customer of the Iisalmi liquor shop after the repeal of the Finnish Prohibition, April 5, 1932.

A cyclist carries an advertisement for the famous movie "The Great Dictator" by Charlie Chaplin, Buenos Aires, 1941

German troops raising the nazi flag over the Acropolis, 1941

This photo is kinda sad and heroic at the same time. A solitary fire fighter stands amidst the rubble and smoke at Ground Zero, 14 September 2001

A Child solider in the Mexican Civil War, 1913

New York after the D-Day, 1945.

Saddam Hussein at a press conference with daughter Hala, 1980s

Soliders at a Red Cross Club in Paris whoop up newspapers and celebrate the end of WW2, August 10, 1945

A formation of Boeing B-29s fly over Mt. Fuji, 1945.

Wehrmacht soldiers with a local Sami reindeer herder in Finnish Lapland, 1942

French athletes drinking Coca-cola at the Summer Olympics in Helsinki, 1952

Finnish Soldiers celebrating Christmas on the battlefront, 1940s

A Balloon used by German fire control in the First World War, September 22, 1916

South Vietnamese refugees approaching a U.S. ship in the South China Sea near Saigon, 1975

Finnish President Urho Kekkonen climbs a palm tree during a state visit to Tunisia, 1965

Soviet propaganda banner in the front lines of Continuation War, 1942

Heavy black clouds of dust rising over the Texas Panhandle during the "Dust Bowl" Season (a period of severe dust storms that greatly damaged the ecology and agriculture of the American prairies during the 1930s), c. 1936

President Theodore Roosevelt sits in a steam dredger in the Panama Canal, November 1906

During a tour of the Caribbean, King Charles donned a rasta cap, 2000

President Roosevelt standing next to the elephant he shot, 1910s