An auditorium is the area within a theatre, concert hall or other performance space where the audience is located in order to hear and watch the performance. Theatre is that branch of the performing arts concerned with acting out stories in front of an audience using combinations of speech, gesture, music, dance, sound and spectacle — indeed any one or more elements of the other performing arts. ... A Concert hall is a cultural building, which serves as performance venue, chiefly for classical instrumental music. ...

The term is taken from the Greek auditorium which was a series of semi-circular seating shelves in the amphitheatre, divided by broad 'belts', called diazomata, with eleven rows of seats between each.

The audience in a modern theatre are usually separated from the performers by the proscenium arch, and comprises a lower flat area known as the 'stalls' or 'arena' and a number of rows of seats at opposite the stage and sometimes at the sides, known as 'boxes' or 'galleries'. The price to use seats in each part of the auditorium usually varies by the quality of the view of the stage. The proscenium arch is, in literal terms, the square frame around a raised stage area in traditional theatres. ...

In a church the auditorium is the nave, where hearers stood to be instructed. A church building is a building used in Christian worship. ... Full descriptions of the elements of a Gothic floorplan are found at the entry Cathedral diagram. ...

In a monastery the auditorium is an apartment for the reception of strangers. Buddhist monastery near Tibet A monastery is the habitation of monks. ...