Chicago, Illinois, USA
Now officially named the Willis Tower, this 1973 Chicago skyscraper is the tallest building in the western hemisphere at 1,450 feet.
Portland, Oregon, USA
The newest addition to Pioneer Courthouse Square, the uniquely-shaped Fox Tower was completed in 2000 with a design intended to limit shadows over the square. It is named for the Fox Theatre that formerly occupied the site, and still contains a cinema.
San Francisco, California, USA
Completed in 1972, the unique design of the Transamerica Building is a defining element of the San Francisco skyline.
Twelve West Building
Completed in 2009, the "twelve | west" building houses the headquarters of its architects, plus retail space and luxury apartments. It is perhaps best known for its rooftop wind turbines, which provide clean electricity to the building and data for research.
Seattle, Washington, USA
Completed in 1914 with a height of 462 feet, this Seattle skyscraper built by New York architects was the tallest building in the west for decades.
New York, USA
The world headquarters of the Hearst media corporation, this unique skyscraper was begun in the 1920s, abandoned due to the Depression, and finally completed to an ultra-modern, environmentally-friendly design by Norman Foster in 2006.
Designed by Norman Foster, 30 St Mary Axe in London is one of the most unique skyscrapers in the world. Its round shape has earned it the nickname "The Gherkin."
Currently under construction, this skyscraper in Southwark, London, will be the tallest building in Europe when completed in 2012.
New York, NY, USA
In a time of intense competition to build ever higher, Walter P. Chrysler commissioned a skyscraper to surpass all others. The result, an Art Deco beauty completed in 1930, is no longer the tallest but is still the most beautiful skyscraper in New York City.
Empire State Building
New York, NY, USA
The tallest skyscraper in New York City, the Empire State Building has been one of the city's most beloved and recognizable symbols since its completion in 1931. The views from the top are unsurpassed.
Republic National Bank
Dallas, Texas, USA
McLean Commercial Historic District
McLean, Texas, USA