The 2025 film Havoc was primarily filmed in Wales, despite being set in a fictional unnamed city in the United States. Most of the movie was shot in a studio in Cardiff, Wales, using specially constructed sets, including three fishing shacks built for key scenes. Exterior scenes were filmed in various Welsh locations such as the countryside of Merthyr Mawr, Baglan near Port Talbot (notably the train tracks for the climax), and urban areas like Cardiff, Swansea, and Barry. Specific notable locations include Brangwyn Hall in Swansea (used as the police precinct), Swansea University's Bay Campus, Trade Street in Cardiff (transformed to resemble Chinatown), and Dragon Studios in Bridgend. The production extensively used Welsh architecture and visual effects to create the look of an American city

. Director Gareth Evans, who is Welsh, chose to film in Wales to stay close to home and to support local talent, despite the challenge of recreating an American setting in southern Wales. The production received strong support from the Welsh government and local councils, highlighting Wales as a growing hub for filmmaking