Wikipedia
Goudurix is a steel roller coaster located Parc Astérix in France. The Vekoma built ride jointly held the European record for the greatest number of inversions upon its opening in 1989. The record was lost in 1995 to Dragon Khan in Spain. It is one of only two coasters in the world to feature a butterfly element (the other being Ninja at Six Flags Over Georgia). In 2007, following the release of the animated movie Asterix and the Vikings, Viking theming was added to the station and nearby rides, in the form of a wooden Viking longboat. Goudurix is located in the back-west of the park (southeast geographically, since park entrance faces south), near from Tonnerre de Zeus. It was also repainted from its previous white and yellow track with blue supports to yellow and red track with grey supports. The ride is one of the park's main attractions along with the Tonnerre de Zeus, OzIris and Trace du Hourra rollercoasters.
Known for its extraordinarily rough ride, exacerbated by improperly-designed headrests, Goudurix was ranked as the worst steel roller coaster in the world in the 2012 Mitch Hawker Steel Coaster Poll. In response to this, it has seen numerous modifications, including new ride vehicles and a complete retracking to improve the smoothness of the ride.