What the Helen of Troy is This What The Helen of Troy is This? by Prince Of Petworth June 14, 2009 at 10:56 pm 23 Comments DSCN0222, originally uploaded by Prince of Petworth. I couldn’t for the life of me figure this building out. It’s located at the 200 block of H Street, NW. Any guesses? The murals make it slightly less of an eyesore.