List of Greek Orthodox churches in the United States

Holy Trinity Greek Orthodox Church is located in Sioux City, Iowa, United States. Designed by architect William L. Steele, the church building has been listed on the National Register of Historic Places since 1998.

The Boston Block, also known as Aalfs Manufacturing Company, is a historic building located in Sioux City, Iowa, United States. The city experienced a building boom that began in the late 1880s and continued into the early 1890s. One of the major players in that building boom was the Boston Investment Company, a company on the East Coast who built four large commercial blocks in Sioux City simultaneously. Construction on the four buildings began in 1890 and they were completed the following year. In addition to the commercial blocks, they also built a steam heating plant that provided steam and light to three of the buildings as well as to neighboring buildings. The Massachusetts Block (no longer extant) on the southwest corner of Fourth and Jackson was six stories tall and had a similar facade as the Boston Block, which is five stories tall on the northeast corner of Fourth and Virginia. The Plymouth Block on the southeast corner of Fourth and Locust was also five stories tall, and the Bay State Block on Fourth Street is the shortest at four stories. Among the building's tenants was the Aalfs Manufacturing Company, which used the building as its headquarters. The architect of the four buildings is unknown, but John G. Mainland served as supervising architect. The Boston Block is a Richardsonian Romanesque structure that features rusticated stone veneer with a two-story iron and glass storefront. The original storefront was extensively altered in 1948, and it was altered again in 1984. The building was individually listed on the National Register of Historic Places in 1985, and as a contributing property in the Fourth Street Historic District in 1995.

Augustana Lutheran Church is an Evangelical Lutheran Church in America congregation located in Sioux City, Iowa, United States. The church building was listed on the National Register of Historic Places in 2006 as Swedish Evangelical Lutheran Augustana Church.

The Sioux City Free Public Library is a historic building located in Sioux City, Iowa, United States. The library was located in a section of the Municipal Building, no longer extant, between 1892 and 1913. It had outgrown the space when the Library Board contacted Andrew Carnegie in 1910 about providing the funding for a new library building. Their request was initially turned down. They chose to work with New York City architect Edward L. Tilton, an architect preferred by Carnegie, in place of local architect William L. Steele who was working with the board previously. Local resident George Murphy donated the property for the new building. Meanwhile, Tilton designed the two-story brick Renaissance Revival building. On April 8, 1911, Carnegie approved the project and donated $75,000 for the building's construction. The new building was dedicated on March 6, 1913, and it is considered "an excellent early twentieth century example of the architectural development of library planning and design." It was Tilton's only building in Iowa. Plans were made to enlarge the building in 1938, but the bond issue failed. The library remained in its cramped quarters until 1989 when it moved into a former bank building downtown. Ownership of the Carnegie building was transferred to a group of investors in 1996 who transformed it into apartments. It was listed on the National Register of Historic Places the following year.

The Fourth Street Historic District is a historic district in Sioux City, Iowa, United States. It consists of a concentration of fifteen late-nineteenth-century commercial buildings between Virginia and Iowa Streets that date from 1889 to approximately 1915. Many of the buildings are significant for their elaborate Romanesque Revival architecture. The area is now a local center of restaurants, bars, and specialty shops.

The Alhambra Apartments is a historic building located in Sioux City, Iowa, United States. The city experienced a building boom in 1929, and this building was constructed at that time by American Builders Incorporated of Lincoln, Nebraska. It was one of five apartment buildings built in the city that year, and based on the cost of construction it was the largest. The six-story U-shaped building rests on top of an underground parking garage. The residents could access the garage by way of an elevator. The building is composed of reinforced concrete faced with tan brick and terra cotta trim. Its design is an eclectic mix of architectural styles with Moorish influences. The Alhambra is located in a residential called the Near North-Side, just outside of the central business district. It was listed on the National Register of Historic Places in 2001.

Sioux City () is a city in Woodbury and Plymouth counties in the northwestern part of the U.S. state of Iowa. The population was 85,797 in the 2020 census, making it the fourth-most populous city in Iowa. The bulk of the city is in Woodbury County, of which it is the county seat, though a small northern portion is in Plymouth County. Sioux City is located at the navigational head of the Missouri River. The city is home to several cultural points of interest including the Sioux City Public Museum, Sioux City Art Center and Sergeant Floyd Monument, which is a National Historic Landmark. The city is also home to Chris Larsen Park, commonly referred to as "the Riverfront", which includes the Anderson Dance Pavilion, Sergeant Floyd Riverboat Museum and Lewis and Clark Interpretive Center. Sioux City is the primary city of the five-county Sioux City, IA–NE–SD Metropolitan Statistical Area (MSA), with a population of 149,940 in the 2020 census. The Sioux City–Vermillion, IA–NE–SD Combined Statistical Area had a population of 175,638 as of 2020. Sioux City is at the navigational head of the Missouri River, the furthest upstream point to which general cargo ships can travel, approximately 95 mi (153 km) north of the Omaha–Council Bluffs metropolitan area. Sioux City and the surrounding areas of northwestern Iowa, northeastern Nebraska and southeastern South Dakota are sometimes referred to as Siouxland, especially by local media and residents.

Sioux City Community School District (SCCSD) is a public school district headquartered in the Educational Service Center in Sioux City, Iowa. The district is mostly in Woodbury County, with a portion in Plymouth County.

Mary Elizabeth Day Nursery, also known as Mary Elizabeth Day Care Center, is a historic building located in Sioux City, Iowa, United States. This is the oldest child day care facility in the state of Iowa, and the state's second-oldest preschool. The Sioux City Day Nursery was established in 1914 by the Wall Street Mission, a local settlement house operated by the Methodist Episcopal Church. They moved here in 1926, which is the first building designed as a day nursery in Iowa. The two-story brick Renaissance Revival building was designed by local architect Jurgen A. Raven, and built by The Lytle Company, a Sioux City construction firm. Parents were responsible for paying for at least part of their children's care, but it was also subsidized by religious institutions, private associations, and individuals. During the Great Depression, both the federal and state governments began to fund and license child care. The Works Progress Administration was involved in the 1930s. A garage and playhouse designed by Sioux City architect Knute E. Westerlind was built in 1940, and it is part of the historic designation. The facility was renamed the Mary Elizabeth Day Care Center in 1990. The building was listed on the National Register of Historic Places in 1997.

The Evans Block, also known as Northwestern National Bank Building, is a historic building located in Sioux City, Iowa, United States. The city experienced a building boom that began in the late 1880s and continued into the early 1890s. Fred T. Evans, an entrepreneur who had business interests in Iowa, Nebraska and South Dakota, had this building constructed to house Northwestern National Bank of which he was the president. The bank occupied the main level and other offices were housed on the upper floors. Local architect Charles P. Brown designed the four-story Romanesque Revival style building. The Black Hills sandstone for the public facades was from Evans' quarry. The Panic of 1893 brought Sioux City's building boom to an end, and the Evans block was sold in January 1895. Subsequently, the building has housed a hotel, a factory, a saloon, and a variety of stores. It was individually listed on the National Register of Historic Places in 1985, and as a contributing property in the Fourth Street Historic District in 1995.

The Sioux City metropolitan statistical area, as defined by the United States Census Bureau, is an area consisting of four counties in three states – Iowa, Nebraska, and South Dakota, anchored by the city of Sioux City, Iowa. As of the 2020 census, the MSA had a population of 145,940. Plymouth County, Iowa, was removed from the definition of the MSA prior to the 2020 census.

The Badgerow Building is a historic structure located in downtown Sioux City, Iowa, United States. The building is twelve stories tall and rises 169 feet (52 m) above the ground. It was the tallest building in Sioux City for many years. It was listed on the National Register of Historic Places in 1982. The Badgerow Building was voted one of the 50 Most Significant Iowa Buildings of the 20th Century by the Iowa Chapter of the American Institute of Architects. It was one of five buildings that represented the 1930s.