How many pipes does the world's largest pipe organ, in Atlantic City's Boardwalk Hall, have?

Answer

33,112 pipes

Completed in 1932, its Grand Ophicleide stop is recognized by Guinness as ear-splittingly loud — more than six times the volume of the loudest locomotive whistle. It also has one of only two full-length 64-foot stops in the world, producing notes you feel more than hear.

Source: Guinness World Records / Boardwalk Hall (official count 33,112 pipes)