One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A beautiful geyser under environmental threat.

A daily replay of the experiment that proved the rotation of the Earth.

This meticulously extracted nervous system allegedly came from a 19th-century custodian who donated her body to science.

Yo, Adrian!

Creating this diorama spurred naturalist Carl Akeley to begin advocating to protect the apes.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

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

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

A violent name for a violent volcano.

Rare signs of the former Soviet Union in the Caribbean, though not where you'd expect them.

A gallery of underwater art that can be visited by man and fish alike.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

A field of nothing but boulders which resembles a giant's gravel driveway.

This eerily well-preserved coal town was saved from destruction by a Sean Connery movie.

Buildings that dynamite couldn't bring down were abandoned because of bathroom issues.

A train station that was abandoned by the coal industry and was later converted into a cocktail bar.

This demolished goliath of American industry once loomed over the depressed town it once made thrive.

A take-out restaurant that only serves cuisine from countries with which the United States is in conflict.

This historic Pittsburgh tennis complex is a rare example of natural red clay courts.

This plaque marks a place where one of Hollywood’s most famous dancers got his start.