Statue commemorating the use of ether in anesthesia.

The homestead of American patriot John Adams.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

A restaurant and lodge in northern Wisconsin which served as a clandestine hideout for John Dillinger and featured one of the most famous botched FBI raids in history.

The highest point in Washington state is a volcano covered in glaciers.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

This famous bridge twisted itself into oblivion, but not for the reason you might think.

Old submarine parts have been converted into faux whale fins.

A huge musical sculpture and other art installations on the National Oceanic and Atmospheric Administration grounds.

This gold-winged spire celebrates the first true flight around the world.

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

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

An architect's childhood fantasy treehouse made real.

A beautiful geyser under environmental threat.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

A cemetery housing wild west legends in South Dakota.

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

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

Unrepaired walls from a 1920 anarchist bomb attack.

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

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

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

Historic Hull Street was actually the first street with a proper name in the Boston area.