Las Vegas’s Sphere may be getting a sibling in an unexpected location

Is the future of concert venues more spheres? It seems so.

Following on the success of Sphere in Las Vegas, plans are underway to bring a smaller-scale version to the National Harbor in Maryland, just outside of Washington, D.C. Wes Moore, the governor of Maryland, announced on Sunday that the state and Prince George’s County are working with Sphere Entertainment Co. and Peterson Companies to develop a 6,000-seat sphere, its second venue in the U.S. 

“This will be one of the...