Igor,
You should be aware that a number of buildings and properties in the U.S. are copyrighted (or otherwise have terms of use for photographic purposes). This may affect your ability to use images of them for commercial purposes. A
partial list can be found here, and includes such such landmarks as the Chrysler Building in New York, the Hollywood Sign, any of the Disney parks, the Hollywood Walk of Stars and Chinese Theater in Hollywood, the Mississippi, Delta Queen and Natchez paddle steamers, and the Lone Cypress tree at Pebble Beach, CA.
Disney, in particular, is very aggressive about protecting their copyrights and trademarks. You may be able to license some of these for commercial use, but you would have to take that up with the rights holder.
Best,
Paul