This impressive Boston holy house is the American mecca for Christian scientists.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

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

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

Every week, a festive public jam session breaks out in downtown Asheville.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

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

This handsome giant is said to mark the birthplace of the mythical woodsman and even had a cameo in a Stephen King novel.

More than 21,000 images fill this overlooked gem of a prehistoric site.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

This is one really big nut.

A unique geological area spiked with wind-carved rocks that resemble teepees.

A cave's rare beauty held a cavernous secret hidden underground.

A multi-storied adobe complex has been inhabited for more than a thousand years.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

One of the final grand railway depot hotel complexes is slowly being restored to its former glory.

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

This historic national park is covered in the stunning ruins of red rock pueblos.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

See massive fossils that are over 200 million years old in northeastern Arizona.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

Look closely and you’ll notice that the color changes a third of the way up the tower.