Where scientists keep miles of very valuable ice from Antarctica and Greenland from melting.

A collection of over 15,000 zines works to preserve DIY publishing culture.

A well-preserved network of cavernous tunnels have spent silent centuries removing Toronto's waste.

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

The flower-shaped temple in Virginia aims to transcend the boundaries of the world’s religions.

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

Lines from a walking song are etched into a rock in Natural Bridge State Park.

The FBI's urban training course may have the highest fake crime rate in the world.

Located at the former Lorton Prison the Lucy Burns Museum tells the story of the 91 year history of the prison including the dark chapter of its involvement in the women's suffrage movement.

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

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

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

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

The Virginia farm where John Wilkes Booth met his grisly end is now largely forgotten.

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

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

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

This pre-Revolutionary War grist mill ground corn and flour for soldiers in seven American wars.

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

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

A bunker "with enough U.S. currency to replenish the cash supply east of the Mississippi" in the event of nuclear war now protects nitrate film.

One of the last active volcanoes on the Eastern seaboard.

A former mental hospital founded in the 1930s by a eugenicist who advocated for the forced sterilization of patients.

The "first cat," "first dog," and even a presidential pygmy hippo all get their due in this museum.