Diwan-i-Aam

The Diwan-i-Am, or Hall of Audience, is a room in the Red Fort of Delhi where the Mughal emperor Shah Jahan and his successors received members of the general public and heard their grievances.The inner main court to which the Nakkarkhana led was 540 feet broad, 420 feet deep, and surrounded by arcade galleries, where chieftains on duty were posted. On the further side of it is the Diwan-i-Am.

The Diwan-i-Am consists of a front hall, open on three sides and backed by a set of rooms faced in red sandstone. The hall is 100 ft x 60 ft and divided into 27 square bays on a system of columns which support the arches. The roof is spanned by sandstone beams.The proportions of this hall, of its columns, and of the engraved arches show high aesthetics and fine craftsmanship.

Source: Wikipedia