Pittsburgh Three Rivers Regatta

The Pittsburgh Three Rivers Regatta, named for the confluence of the Allegheny, Monongahela and Ohio Rivers at Pittsburgh, is an annual motorboat and river festival held in Pittsburgh, Pennsylvania, United States. The festival was first held in 1978 and is often host to an F1 ChampBoat Series race.

Source: Wikipedia — Pittsburgh Three Rivers Regatta (CC BY-SA 4.0)