The old tower was stuffed with books. Over the years distinct sections formed.
The crafting manuals had gathered near the kitchen, which was dominated by recipe books.
In the sunniest spire sat books about woodland critters making mischief against mean farmers.
In the renovated former-dungeons the romance novels shuddered, yearning for warm hands.
It was all protected by a dragon, who owned the tower and preferred books over princesses.