One of the most incredible exhibits I've seen are the anatomical tables on display in the Royal College of Physicians museum in London. When I walked into the room there were these 3-4 "doors" with what looked like shadows of people on them. The more I looked, and the more I understood what I was looking at, the more amazed I became.
The museum, and building I think, was closed for a few years but understand it's back open again.
https://history.rcplondon.ac.uk/collections/art-and-objects/...
The tables are visually spectacular. They show the recognisable form of the human body laid out flat, as if illustrating a book. The nerves, veins and arteries on display were dissected at the University of Padua’s famous anatomy theatre in the 17th century, and skilfully arranged on varnished wooden panels.