El horizonte del centro de Boston. Ciudad en Nueva Inglaterra, Estados Unidos . - Foto e imagen de stock

BOSTON, USA - JUNE 9, 2013: Skyscrapers in downtown Boston. Boston is the largest city in Massachusetts with estimated 2014 population of 645,966.

Scenic view of majestic urban city

New York City, Financial District with one world trade center in background

New York views, selective focus

BOSTON, USA - JUNE 8, 2013: Street view in downtown Boston. 4.1 million people live in Boston urban area.

A vertical shot of residential buildings under a sunny blue sky

CHICAGO, USA - JUNE 28, 2013: Willoughby Tower in Chicago, USA. Willoughby Tower is an Art Deco style skyscraper built in 1929. It is located at Michigan Avenue.

CHICAGO, USA - JUNE 27, 2013: Sheraton Hotel in Chicago. Sheraton is part of Starwood Hotels and Resorts Worldwide, group employing more than 181,000 people (2013).

Boston old architecture street view. Massachusetts, United States of America.

Boston city skyline, United States. Downtown skyscrapers aerial view.

CHICAGO, USA - JUNE 28, 2013: Willoughby Tower in Chicago, USA. Willoughby Tower is a skyscraper built in 1929. It is located at Michigan Avenue.

Downtown Boston city skyline. Urban skyline view in Massachusetts, USA.

PITTSBURGH, USA - JUNE 29, 2013: Huntington Bancshares American bank holding company sign on Grant Building in Pittsburgh.

Chicago, Illinois in the United States. Old city architecture.

New York - Madison Avenue skyline. United States city view.

NEW YORK, USA - JULY 2, 2013: Fifth Avenue skyline in New York. 5th Avenue is one of most expensive real estate areas in the world.