These machines have been collecting dust for decades.

The U.S. Navy's last diesel-electric submarine rests half-submerged in the middle of Portland.

The oldest tofu shop in the United States is a firm favorite with locals.

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

This sprawling market is a one-stop shop for traditional Kazakh foods, from mare’s milk to sheep’s head.

The heartbeat of modern Uzbekistan’s thriving market culture.

This top secret Chinese military megaproject is the world’s largest human-made tunnel structure.

The largest man-made crater in the U.S. marks the spot where we once tested mining with nukes.

An underground world of gorgeous, palatial metro stations designed as a nuclear shelter complex.

A collection of old steam and diesel locomotives sitting in a fenced-off garden.

Exceptional Nepalese food can be found in a Texas gas station.

This collection of ferns from across the globe is the largest assortment in the United States.

This sculpture may be the only known depiction of a man who helped finance the American Revolution and inadvertently created the dollar sign.

Shop selling 500 flavors of soda has something for everyone.

Largest outdoor staircase in the United States.

One of the world’s longest pedestrian suspension bridges.

This decommissioned nuclear power plant offers tours of its Communist-era control room and reactor hall.

Home to over 300 antique cars and motorcycles, including Thomas Edison's Model A.

A stunning blue-green lake located in the Terskey Alatau mountain range.

Large, airy hallways hide within an impenetrable fortress that beckons urban explorers.

The only museum outside of Australia dedicated to exhibiting the artwork of Indigenous Australian artists.

This scenic waterfront swimming pool is the longest salt water pool in North America.

This raised bulls-eye visible from space was the subject of an intense geologic controversy.

Few things look more out of place than the electric blue ponds in the reddish-brown desert of Utah.