An aerial view of the World Trade Center site and National 9/11 Memorial in New York. More than 2 million people have visited the memorial since it opened last year.
The World Trade Center site —
An aerial view of the World Trade Center site and National 9/11 Memorial in New York. More than 2 million people have visited the memorial since it opened last year.
The memorial waterfalls, the largest man-made waterfalls in the country, are located where the Twin Towers once stood.
National 9/11 Memorial North Pool —
The memorial waterfalls, the largest man-made waterfalls in the country, are located where the Twin Towers once stood.
National September 11 Memorial & Museum/Joe Woolhead
The names of the nearly 3,000 victims killed in the World Trade Center attacks of September 11, 2001, and February 26, 1993, are inscribed on bronze parapets surrounding the two memorial pools.
The names of the victims —
The names of the nearly 3,000 victims killed in the World Trade Center attacks of September 11, 2001, and February 26, 1993, are inscribed on bronze parapets surrounding the two memorial pools.
This 184-foot-long structure commemorates the Japanese attack on Pearl Harbor. Dedicated in 1962, it is the final resting place for many of the USS Arizona's 1,177 crewmen who died on December 7, 1941.
The USS Arizona Memorial —
This 184-foot-long structure commemorates the Japanese attack on Pearl Harbor. Dedicated in 1962, it is the final resting place for many of the USS Arizona's 1,177 crewmen who died on December 7, 1941.
The Auschwitz concentration camp in Poland where Jews and other victims of the Nazis were murdered during World War II draws millions of visitors each year.
The Gates of Auschwitz —
The Auschwitz concentration camp in Poland where Jews and other victims of the Nazis were murdered during World War II draws millions of visitors each year.
AFP/Getty Images
The Auschwitz Jewish Center includes a renovated, historic synagogue, a museum and an education center. It is located in the old city center of Oświęcim, a few kilometers from Auschwitz.
Auschwitz Jewish Center —
The Auschwitz Jewish Center includes a renovated, historic synagogue, a museum and an education center. It is located in the old city center of Oświęcim, a few kilometers from Auschwitz.
A rare original deck chair from the Titanic is a signature artifact of the permanent Titanic exhibit at the Maritime Museum of the Atlantic in Halifax, Nova Scotia.
Titanic deck chair —
A rare original deck chair from the Titanic is a signature artifact of the permanent Titanic exhibit at the Maritime Museum of the Atlantic in Halifax, Nova Scotia.
A young cadet places a rose on the headstone of one of the Titanic gravesites during a Titanic Spiritual Ceremony at the Fairview Lawn Cemetery in Halifax.
A Titantic Memorial —
A young cadet places a rose on the headstone of one of the Titanic gravesites during a Titanic Spiritual Ceremony at the Fairview Lawn Cemetery in Halifax.
Redcliffe Plantation State Historic Site in Beech Island, South Carolina, was home to generations of slaveholders and slave families. The plantation hosts a descendents weekend in late July.
Redcliffe Plantation in South Carolina —
Redcliffe Plantation State Historic Site in Beech Island, South Carolina, was home to generations of slaveholders and slave families. The plantation hosts a descendents weekend in late July.
South Carolina Department of Parks, Recreation & Tourism
An interior look at the slave quarters at Redcliffe Plantation.
Redcliffe Plantation slave quarters —
An interior look at the slave quarters at Redcliffe Plantation.