Werner Stengel including Son of Beast, Millennium Force, Superman The Ride, Top Thrill Dragster, Kingda Ka, Dollywood's Mystery Mine, El Toro, Maverick and many others. In the 2004 Amusement Today Golden Ticket Awards list of the world's top 50 steel roller coasters, 72% have had direct involvement with Stengel Engineering. He received an honorary doctorate from Gothenburg University in 2005, for his "inexhaustible creativity in linking physics and design to the experience of the body in roller coasters and other rides." One of the most famous and highly regarded Stengel/Schwarzkopf rides is Lisebergbanan at Liseberg, a park situated in Gothenburg city, Sweden.
Dragon Steel want to start with the "Dragons of the Lost Sea" and libraries should plan to purchase the whole series". The Voice of Youth Advocates described it as "a fable which is readable, especially for middle and junior high students, on two levels: first, as enjoyable reading and, second, as an allegory of perseverance and loyalty". Booklist commented that "morality is sometimes heavy-handed...But the outlaw dragon and her orphaned human companions are strong and touching in their search for a home". "Dragon Steel" was listed as one of the Child Study Association of America's Children's Books of the Year for 1986.