Situated on floor 8 of Siam Square One, the Theatre contains 1,069 seats; 698 for the stalls (same level as the stage), 355 on the balcony (upper floor) and 16 for 2 VIP Box seats, 8 for each. The Theatre suits many kinds of performance and events such as stage play, talk show, concert, seminar, meeting and conference, press conference, product-launch event, etc.

The system equipped in The Theatre is a modern 35-bar flying system and an overhead crane to support the loading in and out via a container. Moreover, the Theater has perfect acoustics with the public address (PA) system especially and efficiently engineered to serve for all types of performances and events.

The Theater is not only the design of exquisiteness and alignment of the art of architecture but also a venue with modern technology that supports all lights and sounds system, and special effects. The Theater is, therefore, perfect for all kinds of performances and events, emotionally associating participants with the spectaculars visualized.