This stately building in Alexandria, Virginia was built by Freemasons to honor one of their most famous members.

Take a steam-powered ride straight out of the past on this Appalachian rail line.

This pun was simply waiting to come to life, and one defense contractor made it so.

This Virginia railway overpass is said to be haunted by a serial killer in a rabbit costume.

Outsider art meets paleontology at this roadside reptile repository.

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

The only recreation of William Shakespeare's indoor playhouse.

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

Exact replica of the ancient monument, but much, much lighter.

Famously misunderstood wonder of the ancient world

This silent sentry in the crypt below a large Gothic cathedral is often knee-deep in water.

A medieval replica of King Arthur's legendary table, the Round Table hanging in Winchester Castle was decorated by Henry VIII.

Now nearly dry, this lake is said to be the ancient home of the Lady of the Lake, and was once thought to be bottomless.

A unique waterfall that some believe attracts the fairfolk.

A fantastic castle rumored to be the birthplace of King Arthur.

Part museum, part piece of Arthurian-inspired history, this stately hall attracts King Arthur fans from miles away.

Mystic Incan rock piles three miles above sea level.

If you’ve ever seen a picture of Machu Picchu, then you’ve seen a picture of Huayna Picchu—you just didn’t realize it.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

Huge stone depressions which may have acted as an Incan agricultural experiment.