Once upon a time, the Oregon Museum of Science & Industry featured a model of a human heart large enough to walk thru, to wit:
Quote: ... Popular feature of the Natural Science Wing in the Museum is this huge model of a human heart. A door at the rear of the heart al lows visitors to walk into the model to see inner workings (complete with sound effects).
I was in a heart like that about 70 years ago in Philadelphia. Franklin Institute. Memorable experience. Could not stay in it long, as my father was claustraphobic and had to get out. Don
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