This abandoned, spaceship-like building is home to a museum so unpopular that it has been put on hiatus for over two decades.

A vast necropolis where you'll find the elaborate mausoleums of Argentinian tango stars.

James Turrell's total color immersion art installation, hidden on the top floor of a luxury handbag shop.

A collection of cafes and shops all crafted from recycled storage containers.

A performance hall at the American Jewish University moonlights as a sci-fi film location set.

An eccentric folk art landmark made out of discarded bottles by an inspired "grandma."

An entertaining journey through the odd and strange awaits visitors to this shop.

These banned cigarette vending machines now sell little pieces of pocket-sized art.

A giant open-air sculpture made of over 200 full-sized boats.

This incredible collection of vintage pinball machines can be played at 25 cents a pop.

An unusual slot canyon in the Aztec/Navajo Sandstone has a cross-section like an inverted old-fashioned keyhole.

Made from local Irish moss, this pie is served only in Prince Edward Island's potato museum.

A massive forgotten storehouse from 1913 on the Brooklyn Waterfront has a spectacular view of Brooklyn.

European castle ruins in an American state park are actually the product of death and grief.

Historical figures from New York City's Catholic community reside in Midtown.

Skulls from the plague of 1656 and World War II bombings are united by a cult dedicated to caring for the ancient dead.

The Neapolitan Cult of the Dead still cares for the skulls at this mini-Fontanelle.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Thousands of well-dressed mummies below a monastery.

Visit the ancient, mysterious Roman catacombs ... in the Netherlands.

These 17th-century mummies are no longer naturally preserved, but remain on display today.

Underneath this small church are 15,000 bones, arranged by an obsessive academic.

A burial vault located under Tiber Island in the middle of the Italian capital.

A hidden gem in the middle of the city's infamous Jewelry Quarter.