Now nearly abandoned, Kaskaskia was once the capital of Illinois and one of the most important towns on the upper Mississippi.

Explore 10 acres of environmental sculptures.

Massive stele returned to Ethiopia after 70 years in Rome.

The ruined abbey includes a rare surviving example of a monastic latrine.

This graffitied 19th-century building was a prototype of European industrial architecture.

Twelve plaster figures inspired by da Vinci's famed painting haunt the desert landscape above a real-life ghost town.

A memorial to a giant seabird that was hunted to extinction.

The first KFC is on the National Register of Historic Places.

The reconstruction of this prominent building fulfilled a long-written command.

This public library and its impressive collection of academic books have not changed since the 17th century.

This overlooked, beautiful convent hides an original Hieronymus Bosch among its many treasures.

The "father of immunology" used this humble hut to offer the local people some of the world's first free vaccinations.

The bizarre story of the mysterious death and hidden treasure of one of Sanibel Island's early homesteaders.

The hometown of a beloved manga artist created a treasure hunt for his popular ghostly characters.

Collecting 700 years of mechanical death-dealing, the NRA's sprawling gun museum is a revealing testament to the American obsession with armament.

The park preserves a single, rare species of carnivorous plant that spells doom for unsuspecting insects.

An abandoned mansion is now a haven for urban explorers.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

A unique botanical garden housed in three giant geodesic domes.

The origins of a large, medieval castle are shrouded in mystery, but now it's a delightful garden.

Walls of stone rise up from sinkholes caused by underwater erosion.

An otherworldly alpine pasture with its own unique microculture that recalls Middle Earth.

A spring-fed pool so deep it's used for scuba diving as well as swimming.

WWI hospital ship lost in a cyclone turns up on the coast of Fraser Island, where she remains rusted and forgotten.