2021 marks the 25th anniversary of OAP. Home to building complexes, the Imperial Hotel, Osaka, high-rise apartments, springtime cherry blossoms along the Okawa River, and the Tenjin Festival fireworks, this is the perfect spot to enjoy Osaka waterfront scenery. The smelter gateposts of former Mitsubishi Materials can be found at the entrance to OAP Tower and on the east side of the Okawa River.