This image was acquired from
wikimedia and flickr. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
city urban downtown cityscape skyscrapers architecture buildings windows black and white blackandwhite monochrome sky clouds public domain publicdomain skyline blackandwhite outdoor black and white Public Domain Dedication CC Source Public Domain Dedication CC Source Public Domain Dedication CC city windows sky urban blackandwhite