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

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

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

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

Inside the columbarium, thousands of colorful, high-tech Buddhas guard the ashes of the dead.

This Tang Dynasty behemoth is the biggest Buddha in the world.

Founded by the famed children's book artist, this museum spreads an appreciation of the arts through picture books.

Books you don’t need in a place you can’t find.

Eclectic collections, artwork, and some feline friends fill the writer's former home.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

A storefront museum in Asbury Park honoring the Jersey Shore’s deep history of mystery—including the Jersey Devil.

This splendid Versailles-inspired mansion has the largest French-style formal gardens in North America.

If there's another drive-through golf-cart bar in a bat-filled cave on top of a mountain, we don't know about it.

A crumbling hospital from the 1850s on Roosevelt Island.

The largest stone moai on Rapa Nui.

A number of gruesome unsolved murders have turned this simple home into a morbid tourist trap.

This 13th century castle is chock full of ghosts and impossibly rare cows.

The palatial McDonald's that inspired Wesley Willis.

In Chicago, a pizza-enthusiast has opened a museum dedicated to the history of pizza.

A Museum of Holography frozen in 1974.

A century-old network of freight tunnels underneath the city's historic business district.

This titanic Catholic church in Chicago is also a refuge of the fictional cult-favorite wizard detective Harry Dresden.

Rifle through images of skyscrapers, Worlds Fairs, and more in the largest public postcard repository in America.

This surprising gem is a world-class archeological museum hidden at the University of Chicago.