The story behind the mysterious symbol painted in front of the historic university's famous Rotunda.

Edgar Allan Poe's old dorm is now a shrine to the author's legacy.

FDR's Art Deco hospital tower was hopelessly inefficient.

A "hospital" where people went to be quarantined, die, and be buried in the yard.

A quintet of history museums make this Virginia graveyard as much a resting place for funereal history as it is for people.

World's first "penitentiary," meant to be humane, drove men insane.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

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.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

A creepy sculpture of a decapitated head invites viewers to see St. Louis through its empty eyes.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

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

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

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

This stunning concert hall has become a symbol of Iceland's national recovery.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

After much poking and prodding, this island is decidedly not a magnetic anomaly, but it sure is pretty.

A unique sculpture park that specializes in the huge and bizarre.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.