Public, ticketed performance. Tickets available at eventbrite (click into details for links) This stunning Chapel is in the National Registry of Historic places.  

Ticket fee required to enter the Arboretum - https://arb.umn.edu/Tickets (click into details for links)  but the performance is free and all are welcome at the Ordway Picnic Shelter on the Trex Deck. Directions - https://arb.umn.edu/picnic-shelters/ordway-picnic-shelter