Randolph Street Commercial Buildings Historic District

The Merchants Building is a commercial building located at 206 East Grand River Avenue (at Broadway Street) in Downtown Detroit. It is also known as the Broadway Merchants Building. It was listed on the National Register of Historic Places in 1983.

The Harmonie Centre, also known as the Breitmeyer–Tobin Building, is an eight-story commercial building located at 1308 Broadway Street (at the corner of Broadway and Gratiot) in Downtown Detroit. It is part of the Broadway Avenue Historic District. It is also known as the Tobin Building. The building was listed on the National Register of Historic Places in 1980. The east necklace of downtown links Grand Circus and the stadium area to Greektown along Broadway. The east necklace contains a sub-district sometimes called the Harmonie Park District, which has taken on the renowned legacy of Detroit's music from the 1930s through the 1950s and into the present.

The Broadway Avenue Historic District is a historic district located on a single city block along Broadway Avenue between Gratiot and East Grand River in downtown Detroit, Michigan. It was listed on the National Register of Historic Places in 2004. The Broadway Avenue Historic District joins the Randolph Street Commercial Buildings Historic District, a rare surviving commercial area which dates from the 1840s.

Cadillac Center station is a Detroit People Mover station in Downtown Detroit, Michigan. It is located at the intersection of Gratiot Avenue and Library Street. The station takes its name from Cadillac Square, which is adjacent to the Campus Martius Park. It is partially covered by the One Campus Martius parking garage, which was built over the station and track in the early 2000s. The station and garage are connected on the ground level. The People Mover shut down temporarily on March 30, 2020, due to decreased ridership amid the COVID-19 pandemic. The system has since resumed service, but as of June 2022, Cadillac Center remains closed, with trains bypassing the station and continuing to Broadway.

The Harvard Square Centre is a building located at 1344–1346 Broadway Street in Downtown Detroit, within the Broadway Avenue Historic District and next to the Merchants Building. It was built in 1925 and stands at 12 floors in height, designed in the Beaux-Arts architectural style with Romanesque accents. It is currently unused. The current plans for the building calls for a renovation that will include 21 loft apartments. Heritage National Investment has proposed converting the building into 21 residential loft apartments.

The Second Baptist Church, located at 441 Monroe Street within Greektown in Detroit, Michigan, is the oldest African-American church in the Midwestern United States. It was designated a Michigan State Historic Site in 1974 listed on the National Register of Historic Places in 1975.

The Monroe Avenue Commercial Buildings, also known as the Monroe Block, is a historic district located along a block-and-a-half stretch at 16-118 Monroe Avenue in Detroit, Michigan, just off Woodward Avenue at the northern end of Campus Martius. The district was designated a Michigan State Historic Site in 1974 and listed on the National Register of Historic Places in 1975. The thirteen original buildings were built between 1852 and 1911 and ranged from two to five stories in height. The National Theatre, built in 1911, is the oldest surviving theatre in Detroit, a part of the city's original theatre district of the late 19th century, and the sole surviving structure from the original Monroe Avenue Commercial Buildings historic period.

The Jerome H. Remick and Company Building is an early 20th-century office building located at 1250 Library Street in Downtown Detroit, Michigan. It later became an annex of the J. L. Hudson Company, and was listed on the National Register of Historic Places in 1996.

The Water Board Building is a high-rise office building located at 735 Randolph Street in downtown Detroit, Michigan. It was constructed in 1928 and stands at 23 stories tall. It was designed by Louis Kamper in the Art Deco architectural style, and its materials include granite, limestone, marble, and terra cotta.

One Campus Martius is a building located in downtown Detroit, Michigan. It began construction in 2000 and was finished in 2003. It has seventeen floors in total, fifteen above-ground, and two below-ground, and has 1,088,000 square feet (100,000 m2) of office space. The high-rise was built as an office building with a restaurant, retail units, space for Compuware and a fitness center, as well as an atrium. The building now has Rocket Mortgage, Microsoft, Meridian Health, Plante Moran and Compuware as its major tenants. The building was constructed in the late-modernist architectural style, using glass, granite and limestone as its main materials. AIA Detroit's Urban Priorities Committee rated the building's entry as one of the top ten Detroit interiors.

The Cary Building is a commercial building located at 229 Gratiot Avenue (at the corner of Gratiot and Broadway) in Downtown Detroit. It was listed on the National Register of Historic Places in 1983.

The Cadillac Square Building (also known as the Real Estate Exchange Building) was a building located at 17 Cadillac Square in Detroit, Michigan. It was constructed in 1918, and opened in 1919. It stood at 20 floors, with two basement floors, for a total of 22 stories. The high-rise was designed by architect Louis Kamper in the Neo-Gothic architectural style and shared similar characteristics and proportioning to the neighboring Cadillac Tower. The high-rise was built on the former site of a Salvation Army Hall, and was demolished between 1976 and early 1977. A parking lot took its place.