Sioux Falls Light and Power Hydro Electric Plant

The Queen Bee Mill is a ruined mill complex located in Falls Park in Sioux Falls, South Dakota. Opened in 1881, the mill operated intermittently for several different owners during the late nineteenth and early twentieth centuries. A 1956 fire led to the site's demolition, leaving the ruins that stand today. The mill site is listed on the National Register of Historic Places.

Falls Park is a public park in north central Sioux Falls, South Dakota, surrounding the city's waterfalls. The park includes a cafe, an observation tower, and the remains of an old mill. The park comprises over 128 acres just north of downtown, along the Big Sioux River. An average of 7,400 gallons of water fall 100 feet per second. There are many viewing platforms, including the five-story observation tower. Falls Park includes some of Sioux Falls' oldest buildings.

The Zip Feed Tower was a grain elevator and feed mill in Sioux Falls, South Dakota. At 202 feet (62 meters) it was the tallest occupiable structure in South Dakota from its construction in 1956–57 until its demolition in December 2005. The mill closed in 2000 and in 2005 was scheduled for demolition to make way for office and retail space.

The Illinois Central Passenger Depot is a historic railroad station located at the Big Sioux River at 8th St in Sioux Falls, South Dakota. The Illinois Central was the fourth railroad to reach Sioux Falls on December 19, 1887. The station was designed by L.A. Hill and opened in 1888. The stone building has a Queen Anne design utilizing local Sioux quartzite with a light purple color as the principal building material. The tower room contained the ticket office while the rear projection contained the wash rooms. On either side of the ticket office were the passenger waiting rooms and beyond them, separated by solid masonry walls were the baggage rooms. The depot represents an unusual example of the Queen Anne style in railroad architecture.The station was added to the National Register of Historic Places on August 18, 1983.

The Orpheum Theater (historically spelled Orpheum Theatre), formerly the Sioux Falls Community Playhouse, is a historic theater at 315 North Phillips Avenue in downtown Sioux Falls, South Dakota. It is the oldest theater in Sioux Falls and was listed on the National Register of Historic Places in 1983. Originally, it hosted vaudeville performances, and briefly served as a movie theater before being converted again into a stage theater, which it remains today.

The Old Minnehaha County Courthouse, located at Main Avenue and 6th Street in Sioux Falls, is the former county courthouse of Minnehaha County, South Dakota. The courthouse, which was the seat of county government from 1890 to 1962, is one of the oldest buildings in Sioux Falls. The Richardsonian Romanesque building was designed by local architect Wallace L. Dow and built from locally quarried quartzite, a common building material in Sioux Falls at the time. The three-story building features a tall clock tower over the front entrance. The building's doorways are surrounded by Roman archways; the second- and third-story windows are also arched, while the first-story windows are rectangular. The attic windows have decorative dormers aligned with the front walls.The courthouse was added to the National Register of Historic Places on May 10, 1973.

The Eighth Street Bridge in Sioux Falls, South Dakota brings S. Eighth St. over the Big Sioux River. It is a triple-arch concrete deck arch bridge that was built in 1912 by N.M. Stark and Company. It has also been known as the South Dakota Dept. of Transportation Bridge No. 50-203-206. It was listed on the National Register of Historic Places in 1993.Its NRHP nomination notes that it has a four-lane roadway and rests on piers that "are protected by pointed cutwaters with conical caps." The roadway is "flanked by sidewalks and concrete railings with neoclassically detailed balustrades. The railings mark the position of each pier with an elegant, fluted cast-iron light stand ornamented with consoles at the base."Restoration work on the bridge was done in 1977.

The South Dakota State Penitentiary is a state prison located in South Dakota's largest city, Sioux Falls. The building's industry shop makes several things for the state, including woodwork and license plates. The State Penitentiary also houses South Dakota's death row for men and the state's execution chamber.

The Hotel on Phillips is a hotel at 100 N. Phillips Ave. in Sioux Falls, South Dakota. It is located in the former Sioux Falls National Bank building, a skyscraper built in 1917, during World War I. The building was listed on the National Register of Historic Places in 1979 as "Sioux Falls National Bank Building". The property has also been known as the 100 North Phillips Building.It was the tallest building in the state of South Dakota when it was built, and remained the tallest when it was listed on the National Register. (In 2019, the tallest is the CenturyLink Tower, also in Sioux Falls, built in 1986.) It has been termed Sullivanesque. It was designed by architects Weary & Alford of Chicago. It was built by builders Pike & Cook of Minneapolis.The hotel has been included by the National Trust for Historic Preservation in its Historic Hotels of America program since 2019.According to the Historic Hotels of America program, "The lead architect for the project was Oscar Wentworth [sic, apparently meaning Oscar Wenderoth], a former director of the Office of the Supervising Architect of the United States Government. With help from the contracting company Pike & Cook, Wentworth spent the next year developing the nine-story skyscraper with designs inspired by the architectural aesthetics of the visionary John Sullivan. The building today stands as the only remaining example of this unique brand of architecture—known as Sulluvanesque—in all of Sioux Falls."

The Rock Island Depot is a historic railroad station located at 201 East 10th Street in Sioux Falls, South Dakota. The station opened in 1886 to serve the Burlington, Cedar Rapids and Northern Railway, a predecessor of the Rock Island. The ashlar and wood building has a Richardsonian Romanesque design with a side-facing stone gable and an octagonal turret. The interior of the station includes a waiting room, a ticket office, and the station agent's quarters. As the railroad network spread through South Dakota, Sioux Falls became the state's primary commercial and transportation hub due to its established station. The station served passenger trains through Sioux Falls until 1970.The station was added to the National Register of Historic Places on February 15, 1974.

The Security Bank Building, also known as the Security Building, is a historic commercial building at 101 South Main Avenue in downtown Sioux Falls, South Dakota. It was the first steel-framed office building to be built in the state. It was added to the National Register of Historic Places in 1984 for its architectural design and integrity, as well as for being the site of a bank robbery by the Dillinger Gang in 1934.

The Carpenter Building, historically the Carpenter Hotel or Hotel Carpenter and known colloquially as The Carpenter, is a historic building at 221 South Phillips Avenue in downtown Sioux Falls, South Dakota. Originally serving as a hotel from 1912 to 1966, it is now used for retail and apartment space. It was listed on the National Register of Historic Places in 1986.