Augsburg Eiskanal

The Augsburg Eiskanal is an artificial whitewater river in Augsburg, Germany, constructed as the canoe slalom venue for the 1972 Summer Olympics in nearby Munich.

The first artificial whitewater course of its kind, it introduced the sport of canoe slalom to the Olympic Games. However, because of the expense of building artificial rivers and supplying them with water, canoe slalom was missing from the next four Summer Olympics. It returned with the 1992 Olympic Games in Barcelona, and has been featured in every Summer Olympics since then.

The Eiskanal has thus served as the prototype for six Olympic whitewater venues, from 1992 through 2012, and for more than fifty training and competition facilities in eighteen countries.

Source: Wikipedia