Coasterpedia:On this day/04 12

2025	Helios, a steel semi-floorless roller coaster manufactured by Mack Rides, opens at Fantasiana in Strasswalchen, Salzburg, Austria Großer Adlers freier Flug, a top spin variant ride manufactured by ART Engineering, opens at Fort Fun Abenteuerland in Wasserfall, North Rhine-Westphalia, Germany
2022	Milchshaker, a junior drop tower ride manufactured by Zierer, opens at Eis Greissler Manufaktur in Krumbach, Lower Austria, Austria
2021	Storm Chaser, a steel spinning roller coaster manufactured by Mack Rides, opens at Paultons Park in Romsey, Hampshire, England, UK Spinning Racer, a steel spinning roller coaster manufactured by Maurer Söhne, opens at Fantasy Island in Ingoldmells, Lincolnshire, England, UK Croc Drop, a drop tower ride manufactured by SBF Visa Group, opens at Chessington World of Adventures in Chessington, Greater London, England, UK Cyclonator, a Discovery 30 ride manufactured by Zamperla, opens at Paultons Park in Romsey, Hampshire, England, UK Windmill Towers, a junior drop tower ride manufactured by Zierer, opens at Paultons Park in Romsey, Hampshire, England, UK
2019	KareKare Curl, a tube water slide manufactured by ProSlide, opens at Aquatica Orlando in Orlando, Florida, USA Twin Falls, a body water slide manufactured by American Aqua Designs, opens at Gator Grounds RV Resort & Waterpark in Bunkie, Louisiana, USA
2017	DrakenNest, a disk'o ride manufactured by Zamperla, opens at Avonturenpark Hellendoorn in Hellendoorn, Overijssel, Netherlands
2014	Southern Hill Farms opens in Clermont, Florida, USA Aérotrain, a steel roller coaster manufactured by Vekoma, opens at Parc Saint Paul in Saint-Paul, Hauts-de-France, France Alpina Blitz, a steel roller coaster manufactured by Mack Rides, opens at Nigloland in Dolancourt, Grand Est, France Sky Scream, a steel launched roller coaster manufactured by Premier Rides, opens at Plopsaland Deutschland in Haßloch, Rhineland-Palatinate, Germany Black Hole, a steel enclosed roller coaster manufactured by Zierer, opens at Freizeit-Land Geiselwind (loan) in Geiselwind, Bavaria, Germany Despicable Me Minion Mayhem, a simulator ride manufactured by Intamin, opens at Universal Studios Hollywood in Universal City, California, USA
2009	Water Slide, a body water slide manufactured by ProSlide, opens at Disney's Fort Wilderness Resort in Lake Buena Vista, Florida, USA
2008	Tacot en Folie, a steel roller coaster manufactured by Soquet, opens at Parc Ange Michel in Saint Martin de Landelles, Normandy, France
2003	Balder, a wooden roller coaster manufactured by Intamin, opens at Liseberg in Gothenburg, Västra Götaland, Sweden Scream!, a steel floorless roller coaster manufactured by Bolliger & Mabillard, opens at Six Flags Magic Mountain in Valencia, California, USA Batman The Ride, a steel inverted roller coaster manufactured by Bolliger & Mabillard, opens at Six Flags New Orleans in New Orleans, Louisiana, USA Python, a steel roller coaster manufactured by Pinfari, opens at Gulliver's Land in Milton Keynes, Buckinghamshire, England, UK Delirium, a frisbee ride manufactured by HUSS, opens at Kings Island in Mason, Ohio, USA
1996	Wild Maus, a steel wild mouse roller coaster manufactured by Mack Rides, opens at Busch Gardens Williamsburg in Williamsburg, Virginia, USA
1992	Disneyland Park opens with 1 ride in Marne la Vallée, Île-de-France, France
1990	Monorail, a monorail ride manufactured by Vekoma, opens at Efteling in Kaatsheuvel, North Brabant, Netherlands
1981	Python, a steel roller coaster manufactured by Vekoma, opens at Efteling in Kaatsheuvel, North Brabant, Netherlands