My husband and I took a tour at the Titan Missile Museum last year and it's a pretty cool tour. For the TNG fans out there, this is where ST First Contact was filmed (and I totally figured that out before the tour guide even mentioned it!) Also, the missile hatch is visible from space, so to keep an agreement with Russia over nuclear weapons, the missile hatch has concrete barriers, which are also visible from space, blocking the hatch in a half open position.