This former office building has been transformed into an immersive music venue and art space.

Inspired by a piece of concrete, these three pyramid-shaped buildings have been beloved Indianapolis landmarks for over 50 years.

An abandoned sanatorium building from the early 20th century sits in the forest of the Rila mountains.

A colossal statue of a woman hugging a modern building.

Off the beaten path along the coastline of Miura, a scenic cliff with an evocative name.

A monument to placate the spirits of an ancient forest.

This solemn facility remembers the cruel effort to compel Native American children to relinquish their culture.

The origin of the Nixon tapes is rooted in technological incompetence as much as secrecy.

These sprawling mines once served as a source of plaster and today serve as a storage facility.

One lonely, modern pyramid has gone from corporate think tank to deserted boondoggle.

Inside the unassuming cemetery chapel is a magnificent stained glass window and mosaics.

The angel of death appears to weep black tears at this grave marker.

The only presidential monument to display a late POTUS's actual casket.

When beetles destroyed these trees, they found new life as fantasy sculptures.

A herd of roughly 250 American bison roam these plains.

This lovely public park has an intriguing past and unique wooden bridges made of concrete.

This underground holding cell was forgotten for over a century and rediscovered in the 1960s.

This abandoned bridge to nowhere stands secluded in the woods of a Cleveland suburb.

It leads to a former hospital’s old root cellar.

A subterranean world of tunnels links several buildings of this rare 19th-century asylum.

One of the last few period-correct, hand-operated canal locks in the country.

The only remnant of a small mining town is an abandoned railroad tunnel that is steeped in ghostly lore.

The mounds at this site were reconstructed with the help of archaeologists and historians.

A 2,000-year-old Adena burial mound located along a busy street in Columbus, Ohio.