Now an entertainment complex, the Lingotto building was once an avant-garde auto factory with a test track on the roof.

The enigmatic sculpture hides above an escalator in a Milan metro station.

Over 140 boathouses built by miners from the Soudan Iron Mine in the early 20th century overlook Stuntz Bay on Lake Vermilion.

The famed architect designed this Minnesota gas station of the future with a lookout tower.

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

This two-room shotgun shack in Tupelo is the birthplace of a King.

A downtown filled with nearly deserted historic buildings was revived as a pastel paradise.