Vista del livello della strada di Chicago dei grattacieli. skyline di Chicago . - Foto e immagini stock

LOS ANGELES, USA - APRIL 5, 2014: Looking up in downtown Los Angeles. Los Angeles is the 2nd most populous city in the USA (3,792,621 people).

Scenic urban view of modern skyscrapers facade

Perspective view of modern office buildings in financial district at sunset, real estate and success concept, USA

NEW YORK-SEP 19: View of Manhattan skyscrapers from whose walls are reflected clouds in the sky.

NEW YORK, USA - JULY 5, 2013: Street level view looking up at 6th Avenue in New York. The avenue is also known as Avenue of the Americas and is major NYC thoroughfare.

New York City, United States - Manhattan street view from 6th Avenue.

LOS ANGELES, USA - APRIL 5, 2014: Looking up in downtown Los Angeles. Los Angeles is the 2nd most populous city in the USA (3,792,621 people).

New York City, United States - Manhattan street view from 6th Avenue.

CHICAGO, USA - JUNE 28, 2013: 303 West Madison building in Chicago. It was designed by Skidmore, Owings & Merrill LLP firm.

LOS ANGELES, USA - APRIL 5, 2014: Looking up in downtown Los Angeles. Los Angeles is the 2nd most populous city in the USA (3,792,621 people).

Looking up in downtown Chicago - skyscraper city.

NEW YORK, USA - JULY 5, 2013: City view of 6th Avenue in New York. The avenue is also known as Avenue of the Americas and is major NYC thoroughfare.

LOS ANGELES, USA - APRIL 5, 2014: City skyscrapers view in Los Angeles. Los Angeles is the 2nd most populous city in the USA (3,792,621 people).