Municipal Auditorium | |
 Auditorium, seen from the southeast; the 2003 arena is in the left background | |
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| Location | 401 Gordon Drive Sioux City, Iowa United States |
|---|---|
| Coordinates | 42°29′34″N 96°24′24″W / 42.49278°N 96.40667°W |
| Architect | Knute E. Westerlind |
| Architectural style | Moderne |
| NRHP reference No. | 06000316[1] |
| Added to NRHP | July 27, 2006 |
The Sioux City Municipal Auditorium, known as the Long Lines Family Recreation Center or Long Lines Auditorium for sponsorship reasons, is a multi-purpose facility in Sioux City, Iowa. The fifth in a line of major indoor venues built in Sioux City, it was designed by Knute E. Westerlind in 1938 and finally completed after many delays in 1950. In the building's original form, it was an arena that seated up to 3,500 people. In 2003, the building was replaced by the Tyson Events Center, built around the northeast corner of the Municipal Auditorium. The building was then converted to its current use as a recreation center while preserving the exterior building. The converted arena was originally named Long Lines Family Recreation Center, though in 2023 the building added the Long Lines Auditorium signing to the southeast entrance and inside the auditorium. The auditorium is referred to as either name.