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

This little museum is built on a theater that was once a wildly elaborate speakeasy.

An enormous warehouse filled with parade floats collected from over 50 years of patriotic celebrations.

Historic Hull Street was actually the first street with a proper name in the Boston area.

There must be a pun in this haystack somewhere...

An artist's cute bronze subway sculptures belie his violent artistic past.

Cryptic messages embedded in the New York City sidewalk.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

A former major munitions plant that has been converted into a sprawling art space.

The Grand Ole Opry's big voice came from a small home in rural Virginia where she was eventually buried.

This statue is dedicated to Grace Sherwood, the last person in Virginia to be convicted of being a witch.

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

The semi-reclaimed ruins of this canal were once part of an ambitious plan to reroute the mighty potomac.

The only recreation of William Shakespeare's indoor playhouse.

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

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

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

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

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

This red-eyed chrome beast pays homage to the popular modern myth of West Virginia's insectoid monster.

Tucked in the back of this amazing antique store is an important piece of medical history.

Elevated freight railway turned wildly successful urban park.

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

This war hero's old shop remembers the fine line between medicine and quackery during the Revolutionary War.