Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

The site of Paul Revere's historic two lantern warning.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

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

This tiny, tranquil Senegalese island serves as a powerful symbol of the Atlantic slave trade.

This giant statue is the product of a mixture of corruption, Stalinist architecture, and North Korean manpower.

Despite a fraught and controversial history this African island holds a powerful monument to the tragedy of the slave trade.

The Great Fire of London and the regulation of one-way streets both started in this alley.

This Underground station has been a popular filming location for decades, even before it closed.

The pockmarks across the building's facade are remnants of the Blitz.

England's most famous front door has an accidental doppelganger.

Its collection includes a broad array of social, geographic, graphic design, and political history.

One of the few remaining examples of 19th-century London’s attempt to clean up its reputation.

Museum dedicated to the UK's first charity for abandoned children, with keepsakes of the mothers who left them behind.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

The next-door homes of two very different musicians, George Frideric Handel and Jimi Hendrix.

This artist's home turned gallery/museum preserves the creator's love of "Eastern" influences.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

While not Turkey's deepest underground city, this subterranean redoubt is the largest.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

New York City's smallest piece of private property.