A tour inside the world’s largest functioning musical instrument. Literally inside, as it spans several stories and you go into the superstructure.

Predictably, I suppose, it’s an organ, but seriously go look at that thing. It’s in Philadelphia. I guess I have a reason to go to Philadelphia sometime now. Not as an organist – I’m not one – but just for the holy hell will you look at this of it all.

(h/t @gfish on Twitter.)