Schlosshotel Kronberg

A castle in the Taunus foothills that was once the private home of Victoria, Princess Royal, and the Prussian antiques and portraits haven't gone anywhere. This five-star hotel keeps the historic bones while the bathrooms and beds are fully modern, and every room looks out over the Schlosspark gardens. Frederick's Bar pours classic cocktails, Sunday tea goes in Victoria's library, and the whole thing sits just far enough from Frankfurt to feel like another century.