Andre Kertesz was one of the masters of photography yet he was curiously underappreciated until the near the end of his life. A New York Times article highlights an upcoming exhibit of his work from his window. You will see a mixture of abstracts, surrealist views, and all will have his emotional touch. Read more on The New York Times Lens.
I have also written an article several years ago on his Melancholic Tulip if you care to read it.