If you're into medieval kingdom-building, you've got to check out 'The Pillars of the Earth' by Ken Follett. It's not just about castles and battles—it digs into the gritty details of constructing a cathedral in 12th-century England, which was basically the heart of a kingdom's power. The politics, the labor, the sheer ambition of it all! Follett makes mortar and stone feel dramatic.
Then there's 'The Accursed Kings' series by Maurice Druon, which is like 'Game of Thrones' but with real history. It’s all about the French monarchy’s scheming, wars, and, yes, kingdom-building. The way Druon writes makes you feel the weight of every decision—who to marry, which alliances to forge—it’s grand-scale chess with lives at stake.