The giant birds honor two native North American species.

Curtiss is a forgotten figure in the early history of flight.

In the mid-19th century, an eight-sided house was the latest fad.

This non-binary preacher formed a religious movement in the region of New York later known as the “Burned-Over District.”

Where the Millerites gathered to watch the end of the world in 1844—and left disappointed.

How did a French journalist’s grave become the sexiest statue in the cemetery?

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

Site of a classic 19th-century physics experiment to prove the earth is rotating.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

France's most famous cemetery, with some of its most curious tombs.

Abstract dinosaur models in London.

The first tunnel to be dug beneath a river, repurposed as an art and museum space.

The remains of Crystal Palace Great Exhibition of 1851.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

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

A hands-off space for graffiti artists to hone and display their skills.

Rebuilt remains of a temple to Roman god Mithras.

Pluto is still considered a planet in Ithaca, New York.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

Once the most flame resistant building in the country, the South Carolina Historical Society building was almost burnt down in a fire.

Paths are maintained, but trees have taken over plots.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.