The Inco Superstack is the tallest chimney in the Western hemisphere. Wikipedia says:

The Superstack sits atop the largest nickel smelting operation in the world at Inco’s Copper Cliff processing facility in the city of Greater Sudbury. It was constructed by Inco Limited in 1972 at an estimated cost of 25 million dollars. The 1,257 foot (381 m) structure was built to disperse sulphur gases and other by-products of the smelting process away from the city itself. As a result, these gases can be detected in the atmosphere around Greater Sudbury in a 150 mile radius of the Inco plant.

150 miles doesn’t seem all that surprising when you see the vast plume of fumes extending Northwards.

Thanks: Ian

And the nominees for this year’s Google Sightseeing ‘Coolest Looking Bridge Shadow’ Award are as follows…

Ironcladlou for the wallet-burning Verrazano-Narrows Bridge in New York, New York.

Punk floyd, Greg Small, Duane Homick, PegO and TZ for the fantastic Ambassador Bridge which links Windsor, Ontario with Detroit, Michigan. (Windsor is on the south and Detroit is on the north side of the river.)

Steve Hale for the the world’s (second) tallest suspension bridge, the Fred Hartman bridge in Baytown, Texas.

But the winners are… (Drum-roll please!)

Tim, Dave Isaacs and khendron for the 1.6-mile-long Francis Scott Key Bridge in Baltimore, Maryland!

Congratulations guys!

The CN Tower and Rogers Centre (formerly the Skydome, home of the Blue Jays) are in downtown Toronto, Canada. Look for the tower’s shadow to see its shape.

Thanks: Mike Pegg, many others

Crazy, here’s Niagara Falls, and I had no idea it went from America, Northwards to Canada! I always thought it was the other way around. Oh well, that shows you what Superman teaches us… nothing.