3. 190 Bowery Street
Who: Roy Lichtenstein
What: Home & Studio
Now: Graffitied all over

If you've ever been to the Bowery, there is a good chance you walked passed this grandeur corner building that has been covered in graffiti. One of pop art's greatest icons, Roy Lichtenstein, used to rent out the fourth floor in this building where he lived and made art. It's hard to believe that the steps to this historic site are now a piss-soaked nest for the Bowery’s bums