A big museum full of little worlds.

Remnants of 19th century vigilante justice.

On a wall in Cleveland, Ohio find the story of a highly connected fictional community of organisms that created remarkable, lasting structures.

Ohio's 19th-century communist micro-society.

This "tower of death" has acted as an observatory, a religious hub, and an executioner's lair.

This column celebrates Rome's victory over the Goths, and may be the oldest Roman monument in Istanbul.

An 18-mile-long tunnel for sewage waste will soon wind within the bowels of Washington, D.C.

This abandoned amusement park was built on a site with a dark history.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

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

A hidden alley in urban Baltimore is a haven for graffiti artists.

This beloved Baltimore spot features caged dolls, a giant Pez collection, and many, many mannequins.

A remarkable time capsule of American manufacturing deep in Maryland coal country.