If you're in the Jersey Shore area - check out the largest musical instrument IN THE WORLD at Boardwalk Hall in Atlantic City NJ - it's a humungous pipe organ that's a free tour and concert every Wednesday at 10am. SO impressive. It was damaged in a storm 50 years ago, and is in the process of being restored. It's less that 1/2 way done, but still rattles your fillings!
http://www.boardwalkhall.com/arena-information/pipe-organs