Another strategy is to downsize. The National Harbor Sphere will have a third of the capacity of the Las Vegas attraction, and is reportedly aiming to come in at less than half the cost. Littler, cheaper Spheres could make them viable in markets smaller than Las Vegas.

In the mid-1980s, a giant fiberglass sphere appeared deep in the forests of Russia’s Tver region. No one could quite explain where it came from or what it was for. Over the next four decades, the abandoned dome became a pilgrimage site for off-road drivers,

Floyd Mayweather Jr. last met Manny Pacquiao in the ring on May 2, 2015. In that match — which was dubbed “the Fight of the Century” and set Pay-Per-View records — Mayweather Jr. maintained his undefeated record,

If you’d like to see Henley, Joe Walsh, Timothy B. Schmit, Vince Gill and Glenn Frey’s son Deacon one last time before they hang up their six-strings, tickets are available for all of their remaining gigs.