Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

A half-mile long and three stories high, this bridge over the Des Moines River Valley mimics a descent into a mine shaft.

This bird-shaped rock formation defies gravity, time, and classification.

In the remote high desert of New Mexico, a strange array of poles beckon fury from above.