The Rev. Dr. Martin Luther King Jr. speaks in Montgomery, Ala., 1965.

A Standard gas station sits open in Los Angeles, 1961.

Andy Warhol and members of The Factory, Gregory Markopoulos, Taylor Mead, Gerard Malanga, Jack Smith, in New York City, 1963.

Shirley Casady, right from Chesapeake, Va. holds photo of her husband William, 94, sitting in wheelchair, who served on the Iowa during WWII as chief electrician in 1943 during the commissioning ceremony for the battleship as a memorial and an educational museum at the Port of Los Angeles in San Pedro, Calif., on Wednesday, July 4, 2012. The ship, built in 1940, arrived in Los Angeles in May and will be permanently stationed in the port and operated as a floating museum.

In this historic image, guns fire aboard the USS Iowa.

Members of the military stand aboard the battleship USS Iowa as it approaches its new home in San Pedro, Calif.

A view of the bow of the USS Iowa.

A historic aerial view of the USS Iowa firing her guns.

Tower Bridge and the Tower of London in March 1921.

Houses of Parliament and Parliament Square, Westminster, London in June 1926.

Saint Paul's Cathedral, London in March 1921.

Purves Road, Kensal Green, London in March 1921.

The FA Cup Final between Sheffield Wednesday and Cardiff City, Wembley Park, London in April 1925.

Crystal Palace, Penge, London in April 1925.

The residential portion of the Sweet Auburn Historic District, including the home where Rev. Martin Luther King Jr. was born at right. Today Auburn Avenue is a shell of its former self, the bustling mix of banks, night clubs, churches, meat markets and funeral homes long gone, replaced with crumbling facades and cracked sidewalks. Hundreds of thousands of people still flock to Auburn Avenue to see King's birth home, the church where he preached and the crypt where he and his wife, Coretta, are buried. But tourists have little reason to linger. While King's legacy has been preserved, Auburn Avenue's business community has never recovered from the exodus of the black community that supported it. This week, the area was placed on the National Register of Historic Places' 11 Most Endangered list for the second time since 1992 in hopes of spurring preservation-oriented development.

Tourists visit the Ebenezer Baptist Church where Rev. Martin Luther King Jr. preached on Auburn Avenue in Atlanta.

A visitor stands before the crypt of the Rev. Martin Luther King Jr. and his wife Coretta, along Auburn Avenue.

A man walks under the Interstate 75/85 overpass whose construction cut the Auburn neighborhood in half.

National Park Rangers stand outside the original Atlanta Life Insurance Company building on Auburn Avenue, dating back to 1905.

A man walks down the street after asking club goers for spare change in the Auburn Avenue district.

A man pushes a stroller across Auburn Avenue.

A pedestrian walks past a traditional colonial-era Board House dating back about a century on Pademba Road in Sierra Leone's capital Freetown on April 27. Scattered across Sierra Leone's capital Freetown stand ageing wooden houses, some of which look more like they belong on the east coast of 18th century America than in a steamy west African city. Others look like they may have been built hundreds of years ago in the islands of the Caribbean, another reflection of Sierra Leone's history as a colony established for freed slaves.

A traditional colonial-era Board House dating back about a century stands on the main road through the Congo Town neighbourhood of Sierra Leone's capital Freetown.

People walk past a traditional colonial-era Board House dating back about a century on the main road through the Murray Town neighbourhood of Sierra Leone's capital Freetown.

A former British colonial administration building stands on stilts in the Hill Station neighbourhood of Sierra Leone's capital Freetown. Alongside the Krio Board Houses, the Hill Station area of Freetown is home to another set of striking timber dwellings with a different history. After research in Freetown indicated that mosquitoes brought malaria, around 100 years ago the British colonial authorities relocated their settlement from the stifling coastal flats to higher ground. Large wooden dwellings stand on metal stilts driven into concrete piles. Covered porches descend to ground level.

Painted metal covers the walls of a traditional colonial-era Board House dating back about a century in the Murray Town neighbourhood of Sierra Leone's capital Freetown. The Board House style has been in steady decline for decades, as stone and concrete became more fashionable. Many of the homes are now dilapidated and patched with sheets of rusted metal to keep out rain during the wet season.

Blessing Efere looks at Ku Klux Klan items on display at the Jim Crow Museum of Racist Memorabilia located at Ferris State University in Big Rapids, Michigan on Friday. The museum's goal is to use objects of intolerance to teach tolerance and promote social justice. In the 1830s and '40s, the white entertainer Thomas Dartmouth Rice performed a popular song-and-dance act supposedly modeled after a slave. He named the character Jim Crow. After the American Civil War (1861-1865), most southern states and, later, border states passed laws that denied blacks basic human rights. It is not clear how, but the minstrel character's name 'Jim Crow' became a kind of shorthand for the laws, customs and etiquette that segregated and demeaned African Americans primarily from the 1870s to the 1960s.

Two drinking fountains on display at the Jim Crow Museum of Racist Memorabilia.

Modern-day items on display at the Jim Crow Museum of Racist Memorabilia.

The first complete views of the legendary wreck: As the starboard profile shows, the Titanic buckled as it plowed nose-first into the seabed, leaving the forward hull buried deep in mud—obscuring, possibly forever, the mortal wounds inflicted by the iceberg. (Copyright 2012 RMS TITANIC, INC; Produced by AIVL, Woods Hole Oceanographic Institution)

The first complete views of the legendary wreck: Titanic's battered stern is captured overhead here. Making sense of this tangle of metal presents endless challenges to experts. Says one,

Neo-Nazis and their sympathizers march with torches to commemorate the 67th anniversary of the bombing of Dresden on Feb. 13, in Dresden. The annual memorial has become an opportunity for these organizations to promote their ideology.

People stand along side each other to form a human chain during the 67th anniversary of the Allied bombing of Dresden during WWII in Dresden on Feb. 13. The chain was formed to protest against neo-nazis who use the memorial day to spread their ideology by demonstrations in Dresden.

People light candles to build a form of a large candle at the Neumarkt Square in downtown Dresden, on Feb. 13, as citizens of Dresden commemorate victims of the Second World War who died during aerial bombardments. Between Feb. 13 – 15, 1945, 1,300 US and British heavy bombers dropped more than 3,900 tons of high-explosive bombs and incendiary devices on the city, the Baroque capital of the German state of Saxony. The resulting firestorm destroyed 15 square miles of the city center and killed an estimated 25,000 people.

A three-story sculpture "tower of books" representing over 15,000 titles that have been written about Abraham Lincoln, are part of an exhibit at the Ford's Theatre Center for Education and Leadership in Washington on Wednesday. The new museum, located across from Ford's Theatre and next door to the house where Lincoln died, will open in time for President's Day.

The Ford's Theatre Center for Education and Leadership, in Washington, on Wednesday. The new museum, located across from Ford's Theatre and next door to the house where Lincoln died, will open in time for President's Day.

An employee at the federal archives of the former East German secret police, the Stasi, sorts torn remains of documents and photographs to prepare them for digital reconstruction on January 23, 2012 in Berlin, Germany. The German government, in partnership with the Fraunhofer Institute, is pursuing a pilot project to scan the torn documents and use computer software to piece them back together. Stasi members, in the final weeks before the communist government of East Germany collapsed in 1989, shredded and tore up thousands upon thousands of documents relating to their activities of spying on East German citizens. So far efforts relying on piecing the torn remains together by hand, which started in 1995, have allowed archivists to process only 500 of 16,000 sacks containing the torn documents. The pilot project, which is still in the software development stage, would greatly speed up a process that would otherwise take decades.