Dubuque Intermodal Transportation Center

The Dubuque Millworking Historic District is a nationally recognized historic district located in Dubuque, Iowa, United States. It was listed on the National Register of Historic Places in 2008. At the time of its nomination it consisted of 24 resources, which included 19 contributing buildings, and five contributing structures. Made up of large industrial buildings, the district represents the period of transition when Dubuque went from lumber production to millwork production. The buildings are associated with two local millworking firms, Carr, Ryder & Adams and Farley Loetscher. All of the buildings are brick construction, and are between two and five stories in height. Decorative features include pavilions, pilasters, large entry arches, decorative pediments and parapets. Two of the buildings fill an entire block, while three cover a half block. The most substantial buildings were built between 1881 and 1924.

Washington Residential Historic District is a nationally recognized historic district located in Dubuque, Iowa, United States. It was listed on the National Register of Historic Places in 2015. At the time of its nomination it consisted of 327 resources, which included 262 contributing buildings, 61 non-contributing buildings, and two non-contributing objects. This is one of the early residential areas of Dubuque, and was home to its German community. It also defines the "walkable city" with commercial, industrial, and institutional buildings located here. There are a number of churches in the district from various denominations. Of particular interest are St. Mary's Catholic Church (1866), St. John's Lutheran Church (1880), and St. Matthew's Lutheran Church (1908). A significant number of the buildings were constructed in brick, and the vast majority of the buildings in the district were built by 1891. Vernacular structures are commonplace here, as are various Victorian styles. Hollenfelz House (1891) and the Dubuque Casket Company building (1894) are individually listed on the National Register. The former St. Mary's Catholic Church complex forms its own historic district within this one.

The Metz Manufacturing Company is a historic building in Dubuque, Iowa, United States. The company was established as Hagge and Metz by John Hagge and Louis Metz in 1898. They were a planing mill that produced sashes, doors, blinds, frames, moldings, and stair work for large private and public buildings. The company name was changed to Metz Manufacturing in 1902. The following year they moved to this building. The three-story brick structure built over a raised stone basement was constructed sometime before 1900. It was acquired by Metx LLC in 2017 and renovated into an office building with the first tenant moving in in 2019. The building was listed on the National Register of Historic Places in 2021.

The Grand Opera House is an opera house located at the corner of 8th and Iowa Streets in Dubuque, Iowa that was built in 1890. It was listed on the National Register of Historic Places in 2002.It was deemed important as a "national treasure". The theatre has the largest of all stages ever in Dubuque, and is Dubuque's only surviving opera house. It is architecturally important as an early Richardsonian Romanesque building in Dubuque and as a salient work of Chicago architect Willoughby James Edbrooke. It is Edbrooke's only surviving opera house, and he used its design in his design portfolio that won him the position of Supervising Architect of the U.S. Treasury Department in 1891. Its design is said to be "representative of Edbrooke's smooth exterior wall interpretation of the Richardsonian Romanesque style." It is also historically important from its association with high-quality theatre in Dubuque during 1890-1928. The theater has been preserved with great historic integrity and, in 2002, was being restored for continuing use in live stage entertainment. Its history is extremely well documented.In 2015 performance events at the theater marked its 125th anniversary.

The Dubuque County Courthouse is located on Central Avenue, between 7th and 8th Streets, in Dubuque, Iowa, United States. The current structure was built from 1891 to 1893 to replace an earlier building. These are believed to be the only two structures to house the county courts and administrative offices.The courthouse houses several county government offices including the county auditor, treasurer, attorney, and facilities for the Iowa District Court for Dubuque County.

The Dubuque County Jail is a historic building at 36 East 8th Street in Dubuque, Iowa, United States. Completed in 1858, the jail is an example of the uncommon Egyptian Revival style. It is architecturally a highly original work of John F. Rague, who also designed the 1837 Old Capitol of Illinois and the 1840 Territorial Capitol of Iowa. The building was designated a National Historic Landmark for its architecture in 1987. It served as a jail for more than a century, became a museum in 1975, and was converted into county offices in 2016.

Dubuque City Hall is located in Dubuque, Iowa, United States. The building was designed by J.N. Moody after Faneuil Hall in Boston and the Fulton Street Market in New York City. Dubuque architect John F. Rague served as the supervising architect during construction. Following a Medieval tradition, the city market was located on the first floor, municipal offices were located on the second floor, and a ballroom for civic events was located on the third floor.The three-story brick structure rests on a raised limestone basement. It features a gable roof with bracketed eaves. Each gable has a circular window. The 11-foot (3.4 m) tall windows are located in bays defined by arches. The building was first occupied in February 1858. Initially, the main floor was divided into stalls. They were converted into additional office space for the city when the market relocated. The third floor ballroom was converted into an archery and pistol range for the police department, a bowling alley, and a horseshoe pitching area. The original cupola, which held a bell and four-faced clock, became deteriorated and was removed from the building in 1954. The bell was placed in the plaza next to city hall. The building was listed on the National Register of Historic Places in 1972. A new cupola was created using the original design, and it was erected in 1990. The bell was returned to the tower at that time.

Saint Mary's Catholic Church is a former parish of the Archdiocese of Dubuque. The church is located in Dubuque, Iowa, United States, at the corner of 15th and White Streets. The church is recognizable by its steeple– one of the tallest in the area. The church property was added to the National Register of Historic Places as an historic district in 2015, and the various buildings were included as contributing properties in the Washington Residential Historic District later in the same year.

The John Bell Block, also known as the German Bank & Trust Building, is a historic building located in Dubuque, Iowa, United States. The three-story brick commercial Italianate building was constructed by local businessman John Bell in 1886. Its location on the north side of the central business district meant that it housed several businesses owned by the city's German immigrant population. Chief among them was the German Trust and Savings Bank. It became a tenant when the building was completed and it remained until it built its own building in 1922. In 1918 anti-German sentiments that resulted from World War I forced the bank to change its name to Union Trust and Savings Bank. It remained in operation until 1932 when a run on its deposits as a result of the Great Depression forced it to fail. Its building was taken over by Dubuque Bank and Trust. Three prominent Dubuque professionals also had offices on the second floor of the building. German-born architect Martin Heer had offices beginning in 1888. He partnered with another German-born architect, Guido Beck, from 1889 to 1895. Beck was noted for his commercial blocks and churches. Contractor Anton Zwack had offices here from 1911 to c. 1965. The building was listed on the National Register of Historic Places in 2002. An early tenant was Baumgartner and Kleih Hardware store

The Ziepprecht Block is a historic building located in Dubuque, Iowa, United States. Completed in 1888, it is a fine example of transitional commercial Italianate architecture. The three-story brick structure features a heavy projecting cornice and rounded pediment from the Italianate, with larger paired windows from the Second Empire style, and three-sided bay windows from the Queen Anne style. It is also one of a small number of double storefront blocks that remain in the downtown area. The building is named for Henry Ziepprecht a German-born druggist who settled in Dubuque in 1856 and died in 1887. His estate paid to have this building constructed on the location of an older building that housed his drug store. Now managed by Joseph Wittmer, the drug store and a confectionery were the first businesses to occupy the storefronts. The upper floors housed apartments. The building was listed on the National Register of Historic Places in 2002.

Dubuque YMCA Building, also known as the Iowa Inn, is a historic building located in Dubuque, Iowa, United States. Several area churches partnered to form the local YMCA in 1857. It was one of the first chapters formed west of the Mississippi River. Its activities ceased during the American Civil War, and it was reformed in 1866. They rented rooms on Main Street for their activities. Its first modest gymnasium was outfitted in 1884, and it was improved in 1992 when YMCA took over the facilities over the former Dubuque Athletic Club. The local YMCA completed the first section of this facility two years later, with the second section completed in 1916. Often the local YMCA chapters copied or adapted one another's building designs, which gave their facilities an institutional character in form and style. The Romanesque Revival style was popular in Iowa in the 19th century, which is reflected in the 1894 section. In the early 20th century they generally employed the Neoclassical and Commercial styles, and the 1916 wing reflects the Commercial style. YMCA remained here until 1969, when they opened a new joint facility with the YWCA on Dodge Street. This building became the Iowa Inn, which rented rooms to low-income people. MetroPlains Development of St. Paul, Minnesota bought the building in 2000 and renovated it into an apartment building for senior citizens known as the Henry Stout Apartments. It was named for an early supporter of YMCA in Dubuque.The building was listed on the National Register of Historic Places in 2002.

The Dubuque Casket Company is a historic building located in Dubuque, Iowa, United States. The city was a leading national market in the production of caskets towards the end of the 19th century. This location had been the site of a casket manufacturing plant from 1877 to 1987. The Dubuque Furniture and Burial Case Company was the first firm in Dubuque and the first to locate here. The building was largely destroyed by fire in 1883 and the company was forced out of business. The Dubuque Casket Company was incorporated in 1893 and acquired this property. They started construction of the first part of this building the same year. The four-story brick Neoclassical building was one of the largest manufacturing facilities in Dubuque. The machine and equipment room was located on the first floor, they manufactured fine cloth covered caskets on the second floor, they manufactured undertaker's dry goods on the third floor, and the fourth floor was used for storage. The first addition, now known as the center section was begun in 1903, and another expansion that also unified the main facade was begun in 1911. Two other Dubuque casket manufacturers, Iowa Coffin Company and the Hawkeye Casket Company, were out of business by 1924. Dubuque Casket Company remained in business until 1988. That year the building was sold to Boyes Auto and Truck Parts Co. They sold the building in 2005 to Community Housing Initiatives, Inc., who converted it into an apartment building. It was individually listed on the National Register of Historic Places in 2006, and it was included as a contributing property in the Washington Residential Historic District in 2015.