Not surprisingly, early residents used the falling water to power factories including the old flower mill you can see across the river. The small house is an old power generating station that was used by the mill. The Falls are a must see if you are in the Sioux Falls area and easy to locate just a touch north of downtown Sioux Falls.
Sioux Falls is also home to the Battleship South Dakota Memorial (right off 12th street) and is really worth a stop. The Memorial is very unique and since it was impossible to sail the huge ship up the Big Sioux River (to say the least!), the memorial consists of a full scale outline of the ship along with many artifacts from the ship. Known as Battleship X to keep the Japanese Navy guessing about how many Battleships we had in WWII, the South Dakota was heavily involved in many battles.
The South Dakota (and Washington) participated in one of the only battleship to battleship gunnery duels in WWII. Imagine these huge ships trading 16" shells that weighed 2,000 pounds at distances of several miles. The South Dakota's excellent marksmanship resulted in several Japanese ships being destroyed, although the South Dakota was also hit several times.
This is the official Navy construction model of the South Dakota and shows how she looked at her 1942 commissioning. Although in service for only 5 years, she participated in most battles in the Pacific and even served in the North Atlantic.
This view shows an actual 16" gun from the ship and one of the 4 huge propellers that drove her. You can also see the short wall that depicts the outline of the ship and gives a great idea of the enormous size of the ship.