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I did the tour and I definitely think it was worth it. They were actually retracting the roof while i was on my tour which was cool to see. They also brought us a lot of places including getting to see Babe Ruths contract
The Safeco tour was awesome. We were on the field during batting practice.
If you like wine, there are wineries and tours all over.
I don't know exact locations, but you could look for the Gum Wall and the Fremont Troll.