Daniel K. Perlman had the quietest, cheapest and strangest office in New York City. It was quiet because he had a deserted six-room suite to himself; cheap because he paid zero in rent; and strange because he had all of this on the 40th floor of one of the most famous skyscrapers in the world.
For about seven months, he was a squatter at the Empire State Building.
Full Story: About New York – At Empire State, a Squatter on the 40th Floor – NYTimes.com