SPRINGFIELD – An expansion of Cahokia Mounds State Historic Site’s popular new augmented reality – or AR – app is now available to visitors.

The Grand Plaza AR tour launched Feb. 22 and joins the Monks Mound AR tour to offer a state-of-the-art experience for visitors. 

The Grand Plaza AR tour begins behind the Interpretive Center and follows the concrete trail around the Twin Mounds.

The Cahokia Mounds Museum Society launched the first phase of the product in December.

The Interpretive Center will be closed beginning Monday, Feb. 28 for roof renovation. The first stop of The Grand Plaza segment of the app will be inaccessible during this time; however, visitors can begin the AR tour at any of the other seven stops.