The Delta Center's main architectural focus is the Rotunda area at the corner of 4th Street and Wisconsin Avenue. A public area in most circumstances, this street level space hosts a VISIT Milwaukee Visitors Information Center. Glass-enclosed concourse/lobby/pre-function spaces extend west and north from the Rotunda, and feature a variety of artworks.

Just a few a steps further, Coffee Corner offers premium brew from Stone Creek Coffee and other hot and cold beverages and snacks. Coffee Corner is operated by Levy Restaurants.

On the street level are registration windows, a 37,506 square foot ballroom, up to 14 meeting rooms, and large pre-function lobby spaces. North of the ballroom, a pre-function space exits into the Wells Street underpass providing sheltered, curbside drop-off space for guests or valet parking.

Ballroom
The ballroom can be subdivided into up to four smaller ballrooms.

Ballroom floor: Carpeted
Floor load capacity: 350 lbs./sq. ft.
Ceiling: architectural relief, 28'-31' heights
Lighting: Chandeliers, track lights, 2 styles of down lights, perimeter lighting. All adjustable. Follow spots in mezzanine-level booths.
Power: 2 each 400 Amp/3 Phase and 200 amp/3 Phase supplies for corporate theater. 100 amp, 60 Amp, 30 Amp and 20 Amp supplies in floor and on perimeter.
Utilities: Connections for phone, data lines, video, fiber optics
Ballroom loading access: 10' W x 14' H drive-in door

Street level meeting rooms: 14 (maximum)
Two street level meeting/breakout rooms (102 and 103) can be subdivided into as many as five smaller rooms. A third meeting room (101), can be divided into up to four rooms.

Floors: carpeted
Ceiling: 15' 3" heights, acoustical tile
Lighting: Each division has 2 levels of fluorescent lighting, plus one zone of track lights, one zone of down lights and one zone of perimeter lights, all adjustable.
Power: Each division has 30 Amp and 20 Amp power supplies. 60 amp service is available for larger room sets.
Utilities: Complete sound & light systems. Connections for phone and data lines. Equipment for teleconferencing, satellite links, multimedia.

Pre-function space
Floor: Carpeted
Registration areas: Portable - may be set up at variety of locations

Other street-level amenities
Restrooms: 6
Refreshment areas: portable equipment
Parking lot: 276 spaces
Visitor Information Center: Rotunda
Box Office: 4th & Wells