An overlooked memorial honoring the local Washington residents who died in World War I.

This modest marker near Notre Dame identifies the very center of Paris.

The most photographed house in Maine looks good enough to eat.

This headstone marks the grave of an 11-year-old boy killed during clashes in the streets over the boycotting of British goods.

The infamous Boston Mob ran rackets from an office here in the 1970s.

One of the indelible moments of the American Revolution took place at this location.

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

No one messes with the Massachusetts sacred cod, not this time...

A men’s restroom became a sandwich shop.

The massive machine creates cracking displays of indoor lightning.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

An unfinished rail tunnel that has since been used to house cheese and bats.

The record holder for the world’s largest peach.

Formerly the most gerrymandered district in the U.S., it twisted and turned along racial borders.

Giant acorn-shaped 19th century gazebo from which suburban Washingtonians gazed upon the original "silver" spring.

Scattered throughout London are ancient remnants of the city's former bounding wall.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Perhaps the most scandalous statue of America's first president.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

On Hilton Head Island this bronze King of the Sea rules all things briny—and lets you know if you’re late for lunch.

A museum dedicated exclusively to aircraft used in the military.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.