Over 20,000 sets of spice shakers reveal the surprisingly telling history of our most basic spices.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

This propitious plastic porcine has been petitioning park visitors to pick up after themselves for more than 50 years.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

A multiversal transit station located right below a highway interchange.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

The eccentric mansion of one of the most popular horror authors of modern times.

Built in 1821 using rooms from another estate, the Phillips House is the only historic home on scenic Chestnut Street open to the public.

A simple but powerful tribute to the 20 victims of the 1692 witch trials.

The headquarters in Salem doubles as an occult art gallery.

She stares out across six lanes of traffic, clutching a musket and infant with determination.

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

The longest escalator in the Western Hemisphere takes over three minutes to ride down.

Hidden within an idyllic suburban garden is a memorial dedicated to the victims of a terrifying spree of killings committed on U.S. soil.

The bridge's highly-contested plaque (once again) honors Confederate President Jefferson Davis.

Proto-CIA agents trained with grenades in the sand traps and fired machine guns from the fairways.

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

The ruins of this long-abandoned unsuccessful gold mine can still be found.

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

The final resting place of the tragic king and queen of the Jazz Age is tucked away in a small Maryland graveyard.

A massive white oak tree provides a beautiful canopy near a suburban shopping center and stood before the signing of the Constitution.

Home of the only civilian casualty at the Battle of Gettysburg.

A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.

A labor of love built by local hang-gliding enthusiasts, this ideal launch spot was outlawed by the authorities and has since been largely abandoned.