Funds raised from the concert will support the #PghUnitedForUkraine campaign, which is the product of a partnership between the United Way of Southwestern Pennsylvania and the Pittsburgh Foundation.
Festival organizers said the decision to move was prompted by new rules regarding the use of the park from the Pennsylvania Department of Conservation and Natural Resources.
As war rages in Ukraine, the Pittsburgh Foundation has partnered with the United Way to collect money to help refugees with transportation, shelter, food, medications, hygiene kits and childcare supplies.
The exhibition, set to open in April, will include artifacts and interactive experiences revolving around the Pulitzer Prize-winning playwright and Hill District native son.