CityWave Tokyo is Japan's first citywave® installation, a standing wave pool that opened in August 2018 as part of Sporu Shinagawa, a sports complex near Oimachi Station in central Tokyo built to showcase Olympic sports including surfing. It's open daily from 7am to 11pm, with sessions booked ahead through the venue's own site rather than as a walk-up. As a commercial pool rather than a river feature, it delivers a consistent, adjustable wave regardless of weather or season—useful for logging reps between real river or ocean trips. Check citywave-tokyo.jp directly for current pricing, gear rental, and booking windows before heading over.