USA, New York City, Manhattan, One of the two waterfalls at National September 11 Memorial, World Trade Center.

USA, New York City, Manhattan, One World Trade Center also known as Tower 1 and Freedom Tower.

USA, New York City, Manhattan, Pfizer World Headquarters, East 42nd Street.

USA, New York State, New York City, Manhattan, Exterior of the James A. Farley Post Office Building.

USA, New York State, New York City, Manhattan, Typical office building in the Chelsea area.

Poland, Warsaw, Plac Marszalka Jozefa, modern Metropolitan building.

Poland, Warsaw, Mazowiecka, Architecture from three different periods.

Poland, Warsaw, Plac Marszalka Jozefa, modern Metropolitan building with scholl kids sketching in the foreground.

Poland, Warsaw, Mazowiecka, Architecture from three different periods.

Poland, Warsaw, Plac Powstancow Warzawy, Colourful planters out side modern office building.

Poland, Warsaw, Plac Powstancow Warzawy, Modern office buildings.

Poland, Warsaw, Centrum, Palace of Culture and Science, a gift from Russia in 1955.