Some of my favorite memories include going to the site of the Space Needle to see the construction of the footings and seeing the giant sized nuts and anchor bolts used to hold the legs to the concrete footings.
Going through the "House of the Future" and then finding that house in Corvallis, OR some 45 years later and for sale. It had not aged well.
Getting pins at the USSR exhibit.
"Please Step to the Rear of the Sphere" sang the Bubbleator operator.
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