Camera cars and condom bikes built from scrap and one man's passion.

This abstract roadside poultry was saved from demolition by outraged drivers and pilots.

This psychedelic tromp l'oeil seems to be beckoning drivers to crash into a wall.

This titanic steel chain linking two buildings was installed without permission but instantly beloved.

A white oak with property rights.

An underground magnet for ever-changing street art.

One of corporate America's best-kept secrets is also one of the most publicly displayed.

The ruins of a paper mill destroyed during the Civil War still tower over a tributary of the Chattahoochee River.