Intrigued, four of us drove through beautiful country just west of Ottawa to tour Canada's Cold War Museum for ourselves. Our curiosity heightened as we checked in at the guard house, walked along the damp, dimly-lit blast tunnel, and stepped through the thick steel doorway of what is commonly called the Diefenbunker. We did not expect our minds to be so aptly transported back to a 60s' hub of such national and international significance. Awesome. Really unique.
Cautions: Refer to the good website and reps over the phone. Note the different ways of touring. Book early for guided tours. Give yourselves plenty of time to wonder around on your own. Allow time to enjoy the area's towns, such as Almonte, countryside, and eating establishments. Oh yes, there's even a picnic table on the grounds of the 'Bunker'.