We too didn't see the Mansion. The answers were all either in the short movie that is constantly streaming in the entrance building and or in the main lab building. Some questions were nit that obvious but if your kids aren't shy the Rangers are more than willing to help!
We were there probably two hours and saw both, but you don't have to see the mansion to complete the Junior Ranger program...it's a short drive away. We toured the laboratory and it was really interesting...you could take longer, or zip through it in an hour probably, depending on your interest level and the kids. Also, depending on the age of the child, you have a certain number of pages in a booklet to complete in order to finish the program, but the rangers at each station are super helpful :)
2 hours minimum
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