This modern New Zealand attraction honors ancient forms of astronomy and scientific understanding.

Although it appears ancient and mysterious, the quirky folly was actually built 200 years ago by an eccentric estate owner.

Famously misunderstood wonder of the ancient world

One of the best-preserved, yet least visited stone circle sites in Cumbria.

These Honduran caves earned their magical nickname thanks to reflective bone deposits.

Building this tragically pointless stone barrier cost the lives of the prisoners made to build it.

These mammoth-yet-narrow crevasses in the Earth are perfect for taking an otherworldly swim.

An intentionally grounded cargo ship remains half-buried in the sand.

These mysterious ancient stone spheres were created by a civilization lost to time and are now mostly lawn ornaments.

The ruins in this village were caused by something more sinister than neglect.

Though it's no longer a functioning train depot, this castle-like structure is an important piece of Oklahoma history.

This 19th-century prison once held Irish revolutionary Constance Markievicz, writer Frank O’Connor, and a nine-year-old pickpocket.

This ostentatious Italianate palace of an Oklahoma billionaire is filled with several themed mini-museums.

The only remaining sod house Oklahoma built by a homesteader in 1894.

A series of silhouettes that recall the great cattle drives of the 19th-century.

The world's largest anatomically accurate brain sculpture.

An eerie ship cemetery with gunfire as a soundtrack.

One of the largest private collections of fossils in the world.

One of Indiana's only natural sandstone arches is nestled between resort ruins and an old Boy Scouts camp.

The face of a woman pushes its way through the earth.

Former meatpacking facility turned vertical farm and sustainable business complex.

The beloved home to all publications indie, erotic, and punky.

Chicago's museum dedicated to the history of bondage and fetishism is more textbook than titillation.

This unauthorized stone mermaid was secretly carved out of public stone before being permanently preserved.