Narrowest house in Boston.

The most famous location in China was home to whole dynasties worth of imperial rulers.

Visit the monolithic tomb of America's most famous general.

Located just behind a quiet residential neighborhood, this is ground zero for the Salem witchcraft hysteria of 1692.

The London pub overlooks where the Mayflower was moored before setting sail for the New World.

A bronze statue dating back as far as 1252, still has remnants of gold on its right cheek from ancient gilding.

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

Formerly known as National D-Day Museum, this collection commemorates the battles of Normandy and WWII.

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

What is the Thing?

This small section of the Sleepy Hollow Cemetery is rotten with famous authors' graves.

A plaque marks the site directly below the mid-air detonation of the atomic bomb over Hiroshima.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

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

The site of one of the strangest disasters in history—a wave of deadly molasses traveling at 35 mph.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

Five candy-colored villages on the Italian Riviera.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

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

Copenhagen's celebrated theme park and gardens.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

A massive sea stack famous for its appearance in The Goonies.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.