If you're in London and are interested in the history of medicine, then once you're done with this museum you might want to checkout the Wellcome Collection.

https://wellcomecollection.org/visit-us

It's a free museum. I went into it randomly when I was out exploring, and it was pretty interesting (and I don't have any particular interest in the topic)

I went here when I was in London, great place especially if you’re medically inclined.

What an amazing and strange place! Can I ask, what caught your interest and made you want to share this with us on HN?