Gallery Ballroom I&II at The Royal Sonesta Chicago River North

Gallery Ballroom I&II is 12.5 x 12.5 m (41 x 41 ft), 156 m² (1,682 sq ft), with a 5.5 m (18 ft) ceiling.

Plan view

Shape approximate: the venue publishes area only, so this room is drawn as a square of equal area.

LED wall that fits

Under a 5.5 m ceiling with 1.5 m trim and 0.3 m clearance you get 7 rows of 500 mm tile flown. Along the 12.5 m wall a Absen PL2.5 Plus V2 wall runs 20 x 7 (4000 x 1400 px, 1,092 kg, 22.4 kW).

Wall sizing assumes 1.5 m trim to the bottom edge, 0.3 m clearance under the ceiling, and a wall no wider than 80% of the longest wall. Weight and power are tile totals from the panel spec sheet; add processing, rigging, and cable.

Seating estimate

After a 12 x 7 m stage, Gallery Ballroom I&II holds about 160 theater seats, 65 banquet seats at rounds of 10, or 45 classroom seats. Back row in theater is roughly 5.5 m from the downstage edge; the previz checks whether the bottom of the wall clears the heads in front.

Other rooms at The Royal Sonesta Chicago River North

• Gallery Ballroom10.1 x 22.6 m (33 x 74 ft) · 5.5 m ceiling
• CBR13.5 x 13.5 m (44 x 44 ft) · 5.5 m ceiling
• Contemporary Room7.9 x 14 m (26 x 46 ft) · 2.7 m ceiling
• Canvas10.3 x 10.3 m (34 x 34 ft) · 4.6 m ceiling
• Gallery Foyer10.3 x 10.3 m (34 x 34 ft) · 3.1 m ceiling
• Gallery II10.1 x 8.8 m (33 x 29 ft) · 5.5 m ceiling
• Gallery I10.1 x 7 m (33 x 23 ft) · 5.5 m ceiling
• Modern Room8.2 x 8.5 m (27 x 28 ft) · 2.7 m ceiling
• Gallery III10.1 x 6.7 m (33 x 22 ft) · 5.5 m ceiling
• Contemporary II8.2 x 7.6 m (27 x 25 ft) · 2.7 m ceiling
• Contemporary I7.9 x 7.6 m (26 x 25 ft) · 2.7 m ceiling
• Mosaic Hospitality Suite7.9 x 7.6 m (26 x 25 ft) · 2.7 m ceiling

Published dimensions (source), fetched 2026-09-04. All rooms at The Royal Sonesta Chicago River North · Venues in Chicago