image credit December 1919 issue of Electrical Experimenter
Amusement park rides from the early 20th century weren't exactly known for their safety. But if this terrifying attraction from 1919 had ever been built, it probably would've been the most dangerous ride ever constructed.
Thrill seekers would be strapped into pivoting chairs inside a capsule that would be shot out of an enormous cannon only to land in what's basically a 100-foot tall martini glass. The capsule would splash down into the huge structure and zip through an enormous water flume, landing in a lake below.