It is not often that one comes across a spy museum! And since most of our group loved spy thrillers, be it movies or books, we decided to go.
This is located in the Finlayson building very close to Keskustori. Finding the museum was a challenge in itself, but somehow we did find it!
Entry fee is 7 euros per head, the person there offered us a 40 euro deal for 6 people, we took it. Camera costs 5 euros extra.
It has mostly interesting material and stories from the spy world, from quite some time back (early 20th century to the latest). There are demos of usual tricks like keyboard being 'bugged' to follow key strokes, modifying voice significantly to cover identity(this was great), mini microphone detectors, smallest cameras built long ago, etc. There is a one way mirror, I had heard of these things from Tintin books when I was a kid, and it kind of thrilled the child in me to see it in person, and see it work! Mostly stories of spies, with lots of older equpiment.
Summary: Worth a visit if you are into these kind of things, the 5 euros for camera is probably not worth it.