In 1958, an MIT fraternity pledge laid down on this bridge and instituted a new, unique unit of measurement.

Millions of numbers carved in glass represent the tattoos forced upon victims.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

An easy-to-miss garden in Boston's North End honors the mother of JFK and others who lost children in WWII.

American revolutionaries and British soldiers alike are buried here in the fourth-ever cemetery in Boston.

The site where Charles Dickens gave his first public reading of "A Christmas Carol" in the US.

On a former island, this old fortification once used to protect the Boston Area and started Edgar Allan Poe in his military career.

This ambitious father and son team reigned supreme over the North End, and witches, for many years.

The tomb of Increase Mather and his son Cotton, influential colonial ministers obsessed with the occult.

This landmark cemetery in Boston was created more than 300 years ago.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

London's smallest police station is barely the size of a phone booth.

A safe place for the wild donkeys of a hot vacation destination.

The remnants of an abandoned, 19th-century gold mill along Aruba's rugged northeastern coast.

Hindu temple of the dead home to hundreds of long-tailed macaques.

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

Once the most painted on object in the world, this short campus fence is well on its way to being so again.

One of the largest underground systems runs under Canada's largest urban center.

An abandoned 1970s theme park that has been turned into a space for waterfront walking.