After seeing the exhibit, I wandered down the streets of Babbage, and encountered a tunnel. I could hardly resist seeing where it went - which turned out to be the workshop of Mr. TriloByte Zanzibar. His sign was not entirely reassuring:
Have you ever wanted a pirate ship in your basement? Mr. Zanzibar has one:
Lest someone remonstrate me for entering a private home, let me assure one and all that I merely followed a tunnel and this is where it took me.