In fairy tales and fantasy, two types of people go in towers:  princesses and wizards.

Princesses are placed there against their will or with the intention of ‘keeping them safe.’ This is very different from wizards, who seek out towers to hone their sorcery in solitude.

I would like a story where a princess is placed in an abandoned tower that used to belong to a wizard, and so she spends long years learning the craft of wizardry from the scraps left behind and becomes the most powerful magic wielder the world has seen in centuries, busts out of the tower and wreaks glorious, bloody vengeance on the fools that imprisoned her. 

That would be my kind of story.

When Princess Talia was fourteen, her eldest sister was placed in a tower.

Princess Adina was eighteen by then, and so of a marriageable age. She had grown quite beautiful, though she was more willful than winsome, and she did not care for the notion of the tower very much at all. Their mother did her best to persuade her on the subject. After all, the queen herself had been eighteen when her own parents had sent her to live in that very same tower, to be safely tucked away until her husband could be chosen, and then ride out to claim her. A tradition going back ages and ages.