The history of the tea trade is told in bas-relief on this historic pair of Boston doors.

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

Stolen goods adorn the organ at Old North Church.

The first bell ever cast in Boston was cast by Paul Revere...and sounded terrible.

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

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

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

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

An collection of Chinese propaganda posters from 1949 to 1979.

A total of 999 stairs lead visitors through a massive hole in a mountain known as the Gateway to Heaven.

For those with no fear of heights: a skywalk 4,700 feet up on a Chinese mountain.

The latest in a series of long glass bridges suspended at terrifying heights.

This psychedelic tourist trap is a leisurely descent into madness.

A son-and-daughter meat market, hawked by mom and dad.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

The miraculous hydrant that saved the Mission District in 1906.

The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

Another of California's unused Cold War missile defense complexes has become a graffiti gallery.

A rough granite monument marks the spot where Europeans first caught sight of the San Francisco Bay.

This lurid German fountain plots the sad course of marriage from dating to death.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

This historic toy museum brings a little whimsy to a city not usually remembered for such things.

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.