I bought the complete collection for kindle a long time ago and only started reading through them a couple years ago. It’s not the best formatted ebook, but it’s not the worst. If affordability is your major concern, just get the ebook.

The Sacred Mushroom and the Cross by John Allegro. The author asserts that early people used psychedelic mushrooms for religious experiences and started a cult , and due to religious persecution they had to hide their cult rituals so they started Christianity as a front. But over time their front became the actual religion while the mushroom cult part was forgotten. While his assertions and connections are interesting and fun, his sources are basically “trust me bro”.

The Shire in Lord of the Rings

The entirety of Wheel of Time

I just read the first couple books of Fafhrd and Grey Mouser by Fritz Lieber. There’s a thieves guild in Lankhmar with a compound that’s pretty cool. It’s basically a maze of various rooms and tunnels with secret passages and basements. It’s so vast and there’s so many secret doorways and trap doors that even the thieves don’t know the entirety of it.