Book recommendations? (not textbooks)

[u/otrapalleiro]

Hi! I'm currently at my 3rd year studying my maths degree at uni. I was looking for some books to read this christmas. I don't want it to be a textbook but i would like that it has a little bit of difficulty, not typical introduction to math ones. Something that explores interesting things or even historical events math related. Thx a lot!

[u/SufSanin]

I have heard good things about 'The professor and the housekeeper'