Thrill-seekers looking for an adrenaline hit can head to the iconic Tsutenkaku Tower in the western Japan city of Osaka, where a new obstacle course that involves leaping off the side of the major landmark opened this summer. At “Dive & Walk,” visitors can don harnesses to navigate an athletic course around the outer perimeter of the tower’s lower observation deck roughly 26 meters high before jumping from a height of around 40 m to the deck below, according to operator Tsutenkaku Kanko Co. The new attraction, which opened on July 1, comes as the company seeks to boost excitement and attract t…