The largest stone circle in the world has ended up bringing up more questions than it has answered.

Scattered throughout London are ancient remnants of the city's former bounding wall.

Hear the quietest sound from across the dome.

Rebuilt remains of a temple to Roman god Mithras.

An unusual round church in London with a Templar past.

Almost half-way between the Equator and North Pole.

The only road through the heart of Glacier National Park.

A museum dedicated to the history and exploration of both popular music and science fiction.

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

A geological mystery on Camelback Mountain.

The site of the climactic scene from the classic horror film is now a historic landmark.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

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

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

America's most famous piece of self-built architecture.

This striking art museum holds an amazing series of curiosity cabinets.

A place to eat for on-the-run agents and espionage enthusiasts.

Statue dedicated to the star of an old television show.

A museum celebrating the self-taught artist-environment builder.

The sweetest graveyard in the world is filled with headstones for dearly de-pinted ice cream flavors.

The 100-year-old public collection of a New Hampshire dentist that contains taxidermy, Native American artifacts, and a pair of mummy hands.

The world's largest rotating world.

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

This underfoot portrait is the work of a disgruntled painter inspired by a tragic poem.