Downtown High School (Columbus, Ohio)

The United States Carriage Company is a historic building in Downtown Columbus, Ohio. It was listed on the Columbus Register of Historic Properties in 2014 and the National Register of Historic Places in 2015.

Trinity Evangelical Lutheran Church (previously known as Trinity German Evangelical Lutheran Church) is a historic Lutheran church at 404 S. Third Street in Columbus, Ohio. It was built in 1856 and added to the National Register of Historic Places in 1985.

The Zettler Grocery and Hardware building is a historic building in Downtown Columbus, Ohio. It was built c. 1880 and listed on the National Register of Historic Places in 2014. The building was built for the Zettler Grocery Co., founded around 1880 by Louis Zettler. In 1909, the business closed, and it was leased to other groceries, including Kroger's Grocery (the modern day Kroger Company). Zettler Hardware Co. (founded by Zettler in 1886) moved into the space in 1925, occupying it until 1940. The hardware company moved into another space downtown, and has since expanded to several locations around Central Ohio. The business is still owned by the Zettler family, and is the oldest hardware retailer in Columbus. The building at 268 S. 4th St. was owned by the Zettler family and leased to various companies until 2002, when it was sold to an office supply company. The supply company occupied the building until 2012. Since 2015, the building has housed a local pizzeria.

The Hartman Hotel is an condominium complex and former hotel and office building in Downtown Columbus, Ohio. The building was completed in 1898 and was listed on the National Register of Historic Places in 2018.The six-story Neoclassical building was designed by the local firm Kremer & Hart. It operated as the Pe-Ru-Na Company headquarters from 1898 to 1902, when it became the Hartman Hotel. The hotel closed in 1921, and the building began to house Ohio governmental agencies. Most of these departed in 1933, though the building maintained offices until 1992. It stood vacant from 1992 to 1999, when it was renovated and restored. Another renovation took place from 2005 to 2008, creating condominiums on much of the building's floor space.

The Stoddart Block is a historic building in Downtown Columbus, Ohio. It was listed on the National Register of Historic Places in 1994. The building was constructed in 1911 and designed by the local firm David Riebel & Sons. It was designed for a large furniture store, the Frohock Furniture Company, which operated there until 1938. A second furniture company, Hadley's Furniture Company, occupied the building until 1962. It then operated as the Children's Hospital's thrift shop, from 1962 to 1990. By 2014, the building held 52 low-income apartments. It was renovated into affordable micro-apartments at this time.The building has five stories. It has a red brick exterior, flat roof, and steel-reinforced concrete structure. It has three bays on its west side and six on its north. A stone panel above the top floor reads "Stoddart 1911". By 1994, the only alterations affected the storefront level.

The Del Monte Apartments is a historic building in Downtown Columbus, Ohio. It was built in 1902 and was listed on the National Register of Historic Places in 2016. The Romanesque Revival building was designed by Charles W. Bellows, a Columbus resident and nephew of George Bellows, builder of the 1887 Franklin County Courthouse in the city.The building was constructed as a streetcar suburb-type apartment building with six flats on each of its three levels. The building interior was largely altered as it was converted for office use in 1985.

Schwartz Castle is a historic house in the German Village neighborhood of Columbus, Ohio. The building contributes to the city-listed and National Register-listed district of the same name. The house was built around 1880 for German immigrant Frederich Wilhelm Schwartz, and has seen periods of vacancy surrounding periods of private residential ownership. In the early 20th century, it served as the Columbus Maternity Hospital, the only major public use of the building.

The Peruna Drug Manufacturing Company Building was a historic building in Downtown Columbus, Ohio. It was built c. 1902 and was listed on the National Register of Historic Places in March 1973. The building was demolished in November 1973.The Peruna Drug Manufacturing Company Building was a two-story brick building, and one of the most ornate commercial buildings in the city. It measured 100 x 120 ft. It had ornate north and west facades of marble over brick, while the east and south facades were simply of brick.The building was constructed for Samuel B. Hartman's Peruna Drug Manufacturing Company, makers of the Peruna medicine. It was first built c. 1902, was nearly completed by 1904 when a worker's torch ignited packing materials, lighting the building on fire. The building was salvaged and fully occupied by 1906.

The Franklin County Jail was a county jail building in Columbus, Ohio, administered by the Franklin County government. The building opened in 1889 and was in use until August 1971. At that time, the jail was moved to a new facility, part of the Franklin County Government Center. The 1889 structure was demolished two months later.

Holy Cross Church is a historic church and home to an active parish in the Roman Catholic Diocese of Columbus located in the Discovery District neighborhood of Columbus, Ohio. The Gothic Revival building was completed in 1848 and is the oldest church in Columbus. The church, along with the school and rectory also on the property, was added to the National Register of Historic Places in 1979.

Central Market was a public market in Downtown Columbus, Ohio. The market operated from 1814 to 1966, was the location of Columbus's first city hall for two decades, from 1850 to 1872. It moved three times, each time into successively larger buildings. The third market building stood the longest time, from 1850 to 1966, when it was demolished as part of the Market-Mohawk Urban Renewal project. North Market remains, the only one left of four public markets that operated in the city.

The 1887 Franklin County Courthouse was the second permanent courthouse of Franklin County, Ohio. The building, located in the county seat of Columbus, stood from 1887 to 1974. The site was replaced with Dorrian Commons Park, open from 1976 to 2018; the courthouse moved to a new building nearby. The site is now planned to once again hold the county's courthouse.