The current re-arrangement, in which the Bombe is housed by TNMOC to me probably makes things murkier than would be desirable although I'm sure it helps TNMOC attract visitors because people do like a Bombe demo (the Bombe is a replica, the real Bombes were destroyed because they were secret).

The Bombe isn't a computer any more than a basic electric toaster is a computer, and Enigma is nothing like how you'd do encryption today. It's cool to look at, but IMO it doesn't belong in a Computing museum.

In contrast (and remember this is later in the same war) Colossus is a digital computer (albeit not a stored program digital computer) and it attacks Lorenz, which is a stream cipher (albeit 8-bit bytes haven't been invented back then). Of course Colossus doesn't look like anything much, it's a computer, most of the stuff that's happening is invisible, and you can't understand why it breaks Lorenz, the math is very difficult.

However Colossus and Lorenz, unlike the Bombe and Enigma, are clear ancestors of the technologies we rely on every day, Salsa20 is a popular modern stream cipher, you are undoubtedly reading this on a digital computer. They're as connected to us as the vast physical disks in another TNMOC room, or the BBC Microcomputer (British older people may remember these from school) or the exhibit about FIDO Bulletin Board Systems.