The Mahoning Valley Historical Society is planning its 144th Founders Day Open House for Sunday at the Tyler History Center.

The event has many free activities with a focus on the Mahoning River.

Admission to the event is free.

The following exhibits will be on display: The People of the Mahoning Valley: Stories of Identity and Innovation, The Rayen Mural and On the Banks of the Mahoning: How the River Shaped the Valley.

The open house will also include displays from museums and groups with information on their attractions.

Family-friendly games, ice cream making, and light refreshments will be on sale during the event.

The event will take place between noon and 4 p.m.