A hidden garden of stones engraved with scriptures, a Joseph Smith Sphinx, all carved by one man.

Largest collection of mounted dinosaur specimens in the world.

Costumed elves and mountain bikers co-exist peacefully at this abandoned Christmas-themed adventure park.

Sumptous memorial to a controversial independence.

This harsh mountain path was built as a strange attempt to improve the health of Turkmen citizens.

A small flooded ghost town with a few scattered structures remaining.

A toxic ghost town sitting atop a massive coal fire.

A fiery crater has been burning in the Karakum Desert since 1971.

An enormous concrete structure built over a nuclear crater.

A 400-square foot model of historic Quebec is the playing field for a state of the art light and sound show.

Train tunnel running underneath Quebec City.

Four-story concrete hotel never opened to customers.

The Los Angeles flood disaster that took 400 lives and ended the career of William Mulholland.

"World machine" built by an untrained Austrian farmer.

The cell which saved the life of Ludger Sylbaris, "the man who lived through Doomsday."

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

One of the most accessible undersea plane wrecks in the world.

An abandoned aircraft sits submerged in a lake in the Alaska wilderness.

The old Niles Canyon Aqueduct in the San Francisco Bay Area is a bemusing and secret trail through nature for wayward travelers.

Steam engines and conveyor belts are remnants of a genius system left in the middle of the Maine woods.