Daiwa House Premist Dome

This guide to the Daiwa House Premist Dome in Sapporo follows Naoto Kohiyama, the maintenance chief who once tended golf courses in Niigata before taking charge of a stadium whose natural-grass pitch does not stay put. You'll hear how the outdoor field gets eased toward the dome on sensor-guided wheels, with a crew walking alongside the whole way, and about the volunteers who show up every March with shovels to lend a hand. It follows a stage built to let baseball and soccer trade places without ever breaking concrete.