The entrance to the common room is located on the west side of Hogwarts at the top of a spiral staircase, presumably located on the fifth floor, and is a door without a doorknob or keyhole, but a bronze knocker in the shape of an eagle. In order to enter the room, a person must answer a riddle asked by the eagle knocker; if they answer incorrectly, they must wait for someone else who gets it right.
The Ravenclaw Common Room is one of the airiest rooms at Hogwarts. It is a wide, circular room with arched windows hung with blue and bronze silks and a midnight blue carpet covered in stars, which is reflected onto the domed ceiling. The room is furnished with blue tables, chairs, and a divan. There is also bookcases, and by the door leading up to the dormitories stands a tall statue of Rowena Ravenclaw made of white marble. According to Prefect Robert Hilliard, the sound of wind whistling around the windows of the tower is relaxing while going to sleep.
The Ravenclaws also have their own library within the common room, which is nowhere as big as the main library, but have almost as many books.
During the day, Ravenclaw students have an excellent view of the school grounds, including the lake, Forbidden Forest, Quidditch pitch, Herbology gardens and the surrounding mountains.
In LEGO Harry Potter: Years 1-4, the Ravenclaw Common Room was two-stories and had bookshelves on the bottom floor. The walls are blue and depicted scenes of famous Ravenclaws.