Add Yahoo as a preferred source to see more of our stories on Google. An artist's rendering of the Sphere project proposed for National Harbor. (Photo courtesy Sphere Entertainment and Peterson Cos.) ...

Sphere Entertainment Cos. built the largest spherical building on Earth in Las Vegas. Now it wants to build a smaller one outside D.C. The company behind Sphere unveiled plans Sunday night for what is ...

NATIONAL HARBOR, Md. — Maryland leaders gave an update Wednesday on the plan to bring a Sphere to National Harbor. The project was first announced last month and is expected to create more than a ...