The medieval center of the Islamic world was also once the seat of Saladin's sultanate.

Charnel house at the foot of Mount Sinai.

In Egypt's expanding metro area, many of the neighbors are dead.

Ferdinand Magellan dubbed the world's largest water village the "Venice of the East."

A symbol of Islam in oil-rich Brunei.

This trio of Australian rock spires may have inspired aboriginal legend or just modern tourism.

Nine limestone rock stacks on Australia's "Shipwreck Coast."

Come for the flowers, stay for the bats!

An opal mining town in the middle of Australia where people live, worship, and shop underground.

A small, but award-winning beach known for its literally spotless reputation.

Remnants of a storybook amusement park hidden behind a strip mall.

A merry-go-round that became a rallying point for the early Civil Rights Movement.

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

This Harriet Tubman mural went viral for kids interacting with it.

A charming tour of the umbrella, tin-can, and drinking-straw capital of the world.

A tribute to two brothers' artistic endeavors.

At the birthplace of American railroading, a world-class collection of historic trains.

Hidden within an idyllic suburban garden is a memorial dedicated to the victims of a terrifying spree of killings committed on U.S. soil.

This statue honors the author's groundbreaking family story.

One of the oldest standing structures in Montgomery County, Maryland.

This building at the south end of the boardwalk was once home to the U.S. Life-Saving Service and the U.S. Coast Guard before being rescued itself.

Baltimore's first skyscraper may be home to the inspiration behind pulp fiction's most celebrated bird.

FDR's Art Deco hospital tower was hopelessly inefficient.