Museum Boerhaave (Leiden, Netherlands)
From Atlas Obscura:
“The museum, named for Herman Boerhaave (1668-1738), a Dutch physician and botanist, displays over four hundred years of advances in knowledge in a building that dates back to the 1500s. Originally the St. Caecilia nunnery, then a “plague hospital and madhouse,” the historic building was converted to a university hospital in 1653. In 1720, Herman Boerhaave gave a famous series of lectures known as the “sickbed lessons,” marking the beginning of clinical teaching and of the academic hospital in its modern form. In 1991, the St. Caecilia nunnery took its current form as a museum, where displays of human pathology bring to mind a different sort of “life after death” – that of the medical specimen.
“The museum also contains a wonderful collection of antique scientific instruments, natural history displays, and an old operating theater.”
There’s a lovely collection of photos at the Morbid Curiosity Flick page.