Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

The ghostly remains of an accidental sea.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

An emporium for the weird, creepy, rare, and just plain gross.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

A fitting attraction for the corn capital of the world.

A toweringly silly piece of modern art has been delighting locals since the 1980s.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.