The construction of Banshee, the world’s longest inverted roller coaster at Kings Island, cost approximately $24 million. At the time of its announcement and subsequent opening in April 2014, it represented the single largest investment in the park’s history. Designed and manufactured by the renowned Swiss firm Bolliger & Mabillard (B&M), the ride was a massive engineering undertaking that replaced the infamous Son of Beast wooden coaster and the Thunder Alley go-kart track. The $24 million price tag covered not only the 4,124 feet of specialized steel track and the seven intense inversions but also the extensive themed queue line and the sophisticated station house. The investment proved to be a major success for the park's owner, Cedar Fair, as it significantly boosted attendance and solidified the "Action Zone" section of the park as a premier destination for thrill-seekers. Even as newer rides have been added, Banshee remains a cornerstone of the park’s lineup, lauded for its smooth yet forceful ride experience.