Herbert Hoover's "Brown House" rural presidential retreat was a PR disaster amid the start of the Great Depression.

Artifacts fill the old headquarters of the hugely influential political movement to ban alcohol in the United States.

See the nearly two-century-old ruins of pre-railroad America at the former site of a lock on the Ohio and Erie Canal.

Abandoned former poorhouse, bible college, and haunted house in an Ohio hamlet.

The nearly 200-year-old building displays a perplexing grammatical error.

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

A curious collection of oddities including a lock of Alexander Hamilton's hair and Harry Houdini's ouija board.

The only pachinko parlor in the United States.

The oldest operating cemetery in Denver is the eternal home of some of the Centennial State's most famous residents.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

This museum offers an actual time machine back through Colorado's past.

Native American burial mounds? Giant gopher dens? No one knows what created the Mima Mounds.

Inside this curiosity shop, visitors can peruse the clown collection or purchase a molar from the mouth of Bigfoot.

This North Carolina grave is the final resting place of the world's most famous conjoined twins.

Follow the path behind this treat-slinging camper van to a sculpture garden in the forest.

In the bowels of a 19th-century brewery lurks a fine-dining restaurant offering an array of themed feasts.

The district's only illusionarium supports free writing programs for local students with every purchase.

An overlooked oasis of quiet on the grounds of Washington's monumental basilica.

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

A Civil War fort in the middle of Washington, D.C. has been swallowed by a forest.

A diorama of the Civil War, fought by cats.

America's first nuclear-powered merchant ship is now a time warp to the atomic age.

This dramatic rail curve was once the target of a failed Nazi attack.

A hidden piece of Altoona's railroad history in a long-forgotten abandoned town.