How do you build a successful theme park?

Around the world, entertainment companies are spending hundreds of millions of dollars on shiny new theme park rides and attractions. It's a highly competitive market.They're big money-spinners for the owners and can help boost local economies too. We look at why a medium-sized town in southern England could soon become a magnet for thrill-seeking tourists, and we travel to Sweden, where a theme park with a very local flavour has been celebrating its 100th anniversary.But what happens if you live next door to the planned site of a major new attraction? And do the promises of new jobs and improved infrastructure in an area always come to fruition?If you'd like to get in touch with the programme, you can email us at [email protected] and produced by Elizabeth Hotson(Picture: People hanging upside down on a roller coaster track. Credit: Getty Images)