The 146m-(479ft)high Liseberg Tower at the eponymous Swedish theme park, is to be turned into a free fall attraction.

Called AtmosFear and to be constructed by Intamin, it will be the tallest free fall attraction in Europe in terms of both the fall height and the structure in which it is housed. The ride starts underground in the basement of the tower and from there it takes around 100 seconds to reach the top. The return journey is rather faster, with riders - reaching a speed of 110kph (68.35mph) before being subjected to a g-force of 4 positive when the brakes go on - being in free fall for just over three seconds.

Liseberg Tower opened in 1990 and has served for 20 years as a lookout point. Its reincarnation as AtmosFear will see the protective gondola being removed and replaced with seats and safety bars. The new attraction is scheduled to open in the spring of 2011.