Only a few signs remain of the buried Colorado mining town that supplied the uranium for the first atomic bomb.

The site of the notorious Camp Sumter Prison is now a peaceful memorial.

A total of 22 tiny bridges cross this canal of the Yvette River, forming a unique trail.

This war memorial holds the remains of around 20,000 World War I soldiers from both sides of the conflict.

A memorial to the soldiers who died in the bloody battles to control Verdun in World War I.

Three young men who lived on this street are honored for their service during World War I.

Vice President Humphrey's final resting place is tucked away in this cemetery along with a few other notable figures.

Here, visitors can swing with the waves of the Pacific Ocean.

The tallest lighthouse in the Nordic countries was also the site of a bloody World War II battle.

This large, circular tomb is the final resting place of the first emperor of Rome.

A bronze ballot box stands at the spot where Susan B. Anthony voted illegally.

Nelson Mandela lived here with his family from 1946 until his arrest in 1962.

The oldest surviving presidential residence in the United States.

Hike deep into the woods to explore this Gilded Age masterpiece.

Home of the only civilian casualty at the Battle of Gettysburg.

This memorial complex contains several mass graves for victims of the Siege of Leningrad.

The tragedy of the Japanese internment camps is remembered here by a stark "Soul Consoling Tower."

This is the oldest Roman-made bridge in the city still existing in its original state.

Abandoned businesses, homes, and rusted cars are all that remains of this stopover town.

Designed by Maya Lin, the memorial honors 41 individuals who died fighting for equal rights between 1954 and 1968.

This natural "sea of stones" was once used by the Romans as a quarry.

A memorial dedicated to the victims of the My Lai Massacre.

This monument is a stark reminder of the horrors of the Zanzibar slave trade.

The temporary burial site of the man who shot and killed Jesse James.