Bookworms will get a kick out of this concept hotel, just steps from the New York Public and Pierpont Morgan Libraries on what's known as "Library Way." Rooms are identified by one of 10 Dewey Decimal System categories, and 6,000-plus books are shelved throughout the hotel. Whether you're mad for math or hungry for literature, you can choose a room based on more than 60 themes. The rooms are pleasantly unstuffy, thanks to a décor that's heavy on creams, whites and other light colors. Social readers should check out the mahogany-paneled Writers' Den, which has a cozy fireplace and greenhouse.

Library Hotel Amenities:

• 60 rooms. Wireless Internet access. Complimentary continental breakfast. Restaurant, bar.