I just took the tour of the Fed in NYC. They seriously frown on pictures, so only the outside.
Not really a currency centric tour, though they have a pallet of ones you can lean on.
the big draw is 25% of the world gold is in the basement and you can fill your eyeballs, but that’s about it. I could get close enough to see a lot of Canadian gold bars with a prominent date of 1943, but there were some Elizabeth stamped bars as well.
you get a free bag of notes to take home. Some assembly required.