The heating system in The Arsenal, New York City

Thank you Dan. This was wonderful. As a native New Yorker I've passed the Arsenal countless times stopping only to photograph it. I've also paused at the Delacorte Music Clock--sometimes waiting until it chimes when I've passed through close to the hour. I'll never look at either quite the same--thanks for bringing a new point of view to both.

I worked for the NYC parks dept for two years. Was once in that building. Had I know its history, I would have toured the building! Cool story. No pun intended!!!