Solaniwa Onsen OSAKA BAY TOWER is a massive hot spring theme park in Kansai, Japan. It offers a variety of facilities including garden and foot baths, hot springs, dining options, private baths, bedrock saunas, relaxation and beauty salons, games, festival stalls, and resting zones. Visitors can relax and enjoy the luxurious hot spring resort atmosphere, reminiscent of the Muromachi and Edo periods. With its heavenly hot spring village in the sky, Solaniwa Onsen is the perfect place to unwind and escape the hustle and bustle of everyday life.