One of the last active volcanoes on the Eastern seaboard.

America's first public mental health facility.

The ruins of this Thomas-Jefferson-designed mansion have been left to crumble since the Christmas Day they burnt down.

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

A small Richmond island dotted with the remnants of hundreds of years of history.

The highest point in Virginia can only be reached by passing through ponies and flowers.

Heron, whitewater rapids, and urban industrialism all add to the beauty of this concrete nature walk.

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

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

This bewitching Babylonian goddess haunts a hallway of the British Museum.

The handiwork of a underdog clockmaker who solved an impossible problem for an Empire, and forever revolutionized seafaring.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

This wrecked airplane has been sitting on a black sand beach since the 1970s.

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 valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

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