ROCHESTER — Olmsted County commissioners received their first official glimpse inside the new Graham Park exhibition center Tuesday as the county fair was ramping up. ADVERTISEMENTThe $42.6 million exhibition center will offer a roughly 125-foot by 250-foot performance arena once retractable seating is in place. The inside of Graham Park’s new exhibition center is pictured during a first tour of construction progress on Tuesday, July 28, 2026, in Rochester. ADVERTISEMENTOlmsted County commissioners, Rochester City Council members and county staff receive a first tour of construction progress on Graham Park’s new exhibition center on Tuesday, July 28, 2026, in Rochester. Maya Giron / Post BulletinOlmsted County commissioners and members of the Rochester City Council were among people touring the new Graham Park exhibition center construction site Tuesday, July 28, 2026.