I've included almost my entire video set of this event, in order to make it play out like a trip story. This was taken during the 2015 ATOS convention, and features the largest musical instrument ever built, the 7-manual, 449 rank Midmer-Losh auditorium pipe organ in Boardwalk Hall in Atlantic City. It has over 33,000 pipes. This shows outside Boardwalk Hall, shows the auditorium and console, goes on a pipe chamber tour, and features a concert by organist Steven Ball, who I met during this, at the end it shows Boardwalk Hall viewed from inside the mall near the beach. About a third of the instrument was operational at the time of this recording, the chamber that was operating (right stage) was lit. This had been one of the best events I've ever been to.
More information on the instrument:
https://en.wikipedia.org/wiki/Boardwalk_Hall_Auditorium_Organ