The Ravenclaw Common Room is a bookworm's paradise. There is a large room that serves as a library, and it is said that there are almost as many books there as in the main library, even if the room looks much, much smaller. A statue of Rowena Ravenclaw stands at the entrance to the library. Light floods in from windows close to the ceiling. This is the only common room without a fireplace in the main part of the common room. It is in one of the tallest towers in Hogwarts. To enter it, you must answer a riddle; there is no password.If you cannot answer the riddle, you then have to wait for another Ravenclaw student to open the door for you.The tower gives the best view, and the ceiling depicts the night sky .

See pictures below:
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