COLUMBUS (WCMH)–Nationwide Children’s Hospital is building its new behavioral health treatment and research center with help from Big Lots, the hospital announced Wednesday.

The center will be the largest center in America dedicated to studying behavioral health in children and adolescents.

Big Lots donated $50 million to Nationwide Children’s for the center, which will be called the Big Lots Behavioral Health Pavilion.

Nationwide announced the new behavioral health building in June; it will be part of the hospital’s $730 million expansion.

The hospital said the $158 million pavilion will include 48 inpatient beds, a crisis evaluation center with observation beds, a crisis stabilization unit and outpatient programs. It is scheduled to open in 2020.