The Pillars of the Earth by Ken Follett.
The Pillars of the Earth is a historical novel about the building of a cathedral in the town of Kingsbridge, England. You can tell that Ken Follett has really done his research to make the world as detailed as possible. If you’ve ever wanted to learn how to build a cathedral read this book. But the only problem with this book is its long. Its ridiculously long. I’ve been reading this for a week and I’m only on part one of six. However it is a very easy read. Though it is a bit slow.