When "Mad" King Ludwig II of Bavaria built his dream home high atop a cliff in the style of old German knights' castles, he had no idea that his romantic mansion would inspire Walt Disney's iconic Cinderella Castle.

Although you can't book your stay in this "Fairytale King" fortress, you don't have to be a princess to spend the night in a spectacular castle.

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With Disney's new "Cinderella" hitting theaters this week, Trivago.com found seven secret castles you can sleep in that will make you feel as if you're living a real-life fairy tale.

App users, click on the link above to check out fairy tale castles from around the world.