How long should we plan to be able to listen to the audio and make it thru the exhibit?

Between 1-2 hours with guide and kids I would say

It is about 1 1/2 hour- 2 hours, while u listened and moving every steps.

We were there a couple of hours.

I went with a family of 3 with no audio and stayed over 2hrs

We had a child with us so we were about 45 mins but no more than an hour to have a good look round. Really enjoyed it.

The place isn't all that big, so an hour is about right.

We spent an hour and a half without the audio guide.

If you really interested and want to look at everything like i did it took me about an hour.

Oh Wow! Thanks! I was thinking we would need hours. Great,to know!

About 30 minutes I'd say.