We went down to the Johnson Space Center a couple of days ago.
If you're ever in Houston, it's worth the half day to get down there and tour the facilities. If you like that sort of thing. I had never been and I'm a lifelong resident of Houston.
I suggest, however, that you go on a non-rainy day. Part of the tour consists of going from building to building over a 1600 acre campus. One rides on a tram and when it is raining, one gets soaked. Our experience confirms this.
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The 2 pictures above are in the astronaut training building where mockups of the shuttle and the Russian Soyuz program are located.
These are some actual capsules on display.
Space Shuttle Cockpit.