Structures of steel and iron eerily stand unfinished after they were abandoned midway in construction, covered in weeds, moss and rust, the show explores what they could have been.

Structures of steel and iron eerily stand unfinished after they were abandoned midway in construction, covered in weeds, moss and rust, the show explores what they could have been.

For more than 25 years, "Dateline" has brought viewers investigations into some of America's greatest mysteries.

For more than 25 years, "Dateline" has brought viewers investigations into some of America's greatest mysteries.

A nationwide search for the best home cooks in America. One of 50 hopefuls will become a culinary star and one of America's "Masterchefs."

A nationwide search for the best home cooks in America. One of 50 hopefuls will become a culinary star and one of America's "Masterchefs."

In this half-hour program, artist Bob Ross paints a beautiful oil painting on canvas.

In this half-hour program, artist Bob Ross paints a beautiful oil painting on canvas.

Irish comedian Graham Norton hosts his very own chat show, which includes chatting to A-list celebrities, the very famous Red Chair game, live music, lots of jokes and fun from Graham and the celebrities themselves.

Irish comedian Graham Norton hosts his very own chat show, which includes chatting to A-list celebrities, the very famous Red Chair game, live music, lots of jokes and fun from Graham and the celebrities themselves.