This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

Live long and prosper in Tennessee.

A failed utopian experiment for British expats in the American South is now a Victorian village frozen in time.

The United States' oldest Episcopal church still in active use.

Wedged between two sets of row houses is an awkwardly located family graveyard.

Dogs, cats, horses, monkeys, frogs, and fish are laid to rest at the second-oldest pet cemetery in the U.S.

Two dozen pinball games hidden away inside a most unlikely location.

Giant acorn-shaped 19th century gazebo from which suburban Washingtonians gazed upon the original "silver" spring.

A lawn full of retired spacecraft on display at one of NASA's first research labs.

The whole world in one water tank.

The stone marker that Mason and Dixon placed at the eastern end of the famous north-south border they surveyed.

This beautiful stone arch bridge wasn't even expected to stand for one day, but people have been crossing it for centuries.

One of the oldest anatomical theaters in the U.S. still in use was once the site of an infamous cadaver riot.

A haunting exhibit in a wildlife refuge center highlights threatened species and the conservation efforts needed to save them.

Fascinating museum dedicated to the under-appreciated medical history of urology features some wince-inducing devices.

The longest escalator in the Western Hemisphere takes over three minutes to ride down.

The shelves in the back of this thrift store are devoted to saving, not selling, retro tech.

Captain John Smith thought these cliffs were amazing in 1608 but sharks thought so 20 million years before him.

Walk a trail through a historic Quaker town that outlawed slavery in 1777 and was a major waypoint on the Underground Railroad.

The final resting place of the tragic king and queen of the Jazz Age is tucked away in a small Maryland graveyard.

This dig site outside D.C. is known for its exceptionally high density of baby dinosaur fossils and dinosaur eggs.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

The ruins of this long-abandoned unsuccessful gold mine can still be found.

An eerie, decaying ghost town destined to fade into the forest.