A local prank turned town icon.

One-of-a-kind preserved ruins of an abandoned 1880s church in Chicago's Pilsen neighborhood.

The site of a 19th century "dream city" that almost rivaled Chicago before being swallowed by the Indiana sand dunes.

A room hidden behind a swinging shelf in the children's section.

An abandoned munitions storage facility with a rich architectural history.

Settled in 1696, abandoned after the Revolutionary War.

One of the few surviving original NASCAR dirt-track speedways.

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

The ruins of this Thomas-Jefferson-designed mansion have been left to crumble since the Christmas Day they burnt down.

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

Bad farming practices caused this unnatural natural wonder.

Three markers installed over the course of 140 years mark the point where Arkansas, Missouri, and Oklahoma converge.

Half-sized replica of the Leaning Tower of Pisa built to honor Galileo.