More than 100 people packed the lobby of the 250,000-square-foot cultivation center in Matteson Wednesday to celebrate the opening of Illinois’ largest cannabis cultivation and production facility. The ceremony marked the completion of the first phase of 4Front Ventures’ multiphase expansion project in Illinois. Based in Phoenix, Arizona, the company has plans for continued growth and development in the region. “We faced our share of challenges, whether it was getting the facility designed to our specific specifications, whether that was navigating the ever-changing cannabis laws in the state,” 4Front Ventures CEO Andrew Thut said.