Forgotten Futures Explore Stadiums Built for Dreams That Never Arrived

4. UFO Stadium (Japan) – The Dome That Never Took Off

The Miyazaki Ocean Dome, often called "UFO Stadium" due to its futuristic dome shape, was supposed to be Japan’s answer to year-round indoor baseball. Its cutting-edge design featured a retractable roof shaped like a flying saucer, high-tech seating, and an air-conditioning system designed to keep athletes comfortable. But after economic downturns and lack of demand, the stadium barely saw use. Today, it sits mostly empty, a strange relic of a sports future that never arrived. Opened: 2001 | Rarely Used