Hotel Julien Dubuque

Old Main Street 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 1983. At the time of its nomination it consisted of 33 resources, which included 30 contributing buildings and three non-contributing buildings. In 2015 the boundaries were increased to include five more buildings. Four of the buildings are contributing properties that were excluded from the original district because they were slated to be torn down as a part of the expansion of U.S. Route 61. While the highway was built the buildings were spared. The fifth building is non-contributing as are three structures. This is primarily a commercial area located immediately south of the central business district. Originally, this is where the city's commercial district was located because of its proximity to the ferry and riverboat landings. After 1860 most of the larger retail businesses, banks, and professional offices moved further north on Main Street, and new wholesale businesses moved here and built new structures. The buildings are all constructed in brick and are between three and four stories tall. It is considered to be the "largest concentration of significant nineteenth-century commercial architecture" in Dubuque. The Bishop's Block (1887) and the German Bank (1901) are individually listed on the National Register, and the Hotel Julien Dubuque (1914) is also a contributing building.

German Bank is a historic building located in the Lower Main Street district of Dubuque, Iowa, United States. The city's German community was its most prominent ethnic group in the mid to late 19th century. Like many other Iowa cities of that era, Dubuque had banks that were owned by, and catered to, members of their particular immigrant communities. T.H. Thedinga, the city's first German-born mayor, started this bank in 1864 to serve immigrant Germans. In 1868 it moved from its original location on Main Street and into the former Dubuque Miners' Bank building. That building was torn down in 1901 in order to construct this one. It was designed by Dubuque architect John Spencer in partnership with Chicago architect W.G. Williamson. The three-story brick building has a highly decorative main facade composed of polished pink granite on the main floor and terra cotta on the upper two floors. Decorative elements include egg-and-dart, Greek fret, a row of small lions' heads, bay windows, scroll pediments, imperial German eagles, and a bracketed cornice with dentils. The second and third floors are dominated by four fluted, banded columns with Corinthian capitals. The bank remained in operation here until 1932 when it closed in the Great Depression. Since 1946 the first floor has housed a restaurant and bar. The building was individually listed on the National Register of Historic Places in 1978. and it was included as a contributing property in the Old Main Street Historic District in 1983.

Five Flags Center is a multi-purpose facility in downtown Dubuque, Iowa. It is named for the five flags that have flown over Dubuque; the Fleur de Lis of France (1673–1763), the Royal Flag of Spain (1763–1803), the Union Jack of Great Britain (1780, during a brief interruption of Spanish rule), the French Republic Flag of Napoleon (1803) & America's Stars and Stripes (1803–Present).

The Bishop's Block, also known as the Bishop's Block Apartments, is a historic building located in Dubuque, Iowa, United States. It was individually listed on the National Register of Historic Places in 1994. It was included as a contributing property in the Old Main Street Historic District in 2015.

William M. Black is a steam-propelled, sidewheel dustpan dredge, named for William Murray Black, now serving as a museum ship in the harbor of Dubuque, Iowa. Built in 1934, she is one of a small number of surviving steam-powered dredges, and one of four surviving United States Army Corps of Engineers dredges. She was declared a National Historic Landmark in 1992. She is open for tours as part of the National Mississippi River Museum & Aquarium.

Cathedral 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 1985. At the time of its nomination it consisted of 124 resources, which included 96 contributing buildings, one contributing site, one contributing structure and 26 non-contributing buildings. The district was the first residential area in Dubuque, and developed into a tightly knit neighborhood. It is located west of the original commercial district and below the bluffs of the Mississippi River that rise steeply to the west. Although its original structures no longer stand, its historic buildings are largely from the mid to late 19th century. St. Raphael's Cathedral complex, from which the district receives its name, was important in serving immigrants, including most of the Irish immigrants to the city, and in building ties. In 1985, the district was deemed to have retained "most of its original character and fabric" from the late 1800s. Washington Park (contributing site), J.H. Thedinga House (1855), Fenelon Place Elevator (1882; contributing structure), and Redstone (1888) are all individually listed on the National Register.

The United States Post Office and Courthouse, Dubuque, Iowa is a courthouse of the United States District Court for the Northern District of Iowa located in Dubuque, Iowa. Completed in 1934, it was listed in the National Register of Historic Places in 1985. It is a contributing resource within the Cathedral Historic District.

Schroeder-Klein Grocery Company Warehouse, also known as the Shields & Bradley Block, is a historic building located in Dubuque, Iowa, United States. It was built to house the warehouse needs of the Schroeder-Kleine Grocer Company and the M.M. Walker Company, two of the most prominent wholesale food distributors in the upper Midwest at the turn of the 20th century. Local builders Shields & Bradley constructed the three-story warehouse in 1894 so that the two firms could operate independent of each other. When the two firms merged in 1921, the building became fully interconnected. It was used as a food distribution warehouse until 1959. Other commercial ventures that have been housed here have included beer and soda bottling and distribution, chemical production, overhead door sales, hair products retailer, and pet groomer. In addition to its commercial importance, the building is also considered a significant example of a late 19th century Romanesque Revival warehouse. This was one of several large warehouses built in that style during the same time period in the city, and it is one of few that is still extant. Elements typical of the style found in this building include its massive limestone base, limestone string courses, brick corbelling, and round-arch windows. The building was listed on the National Register of Historic Places in 2011.

The National Mississippi River Museum & Aquarium is a museum located in Dubuque, Iowa, USA. The museum is a property of the Dubuque County Historical Society, which also operates the Mathias Ham Historic Site. The museum has two buildings on its riverfront campus: the Mississippi River Center and the National River Center. The museum originally opened as the Fred W. Woodward Riverboat Museum on July 18, 1982 before being expanded and re-organized into its current form. The museum is an affiliate of the Smithsonian Institution, and is accredited by the American Alliance of Museums (AAM) and the Association of Zoos and Aquariums (AZA).

St. Raphael's Cathedral is a Catholic cathedral and a parish church in the Archdiocese of Dubuque located in Dubuque, Iowa. The parish is the oldest congregation of any Christian denomination in the state of Iowa. The cathedral church, rectory, former convent, and former parochial school building are contributing properties in the Cathedral Historic District on the National Register of Historic Places.

The J.H. Thedinga House is a historic building located in Dubuque, Iowa, United States. Thedinga was a native of Hanover who settled in Dubuque in 1839. He studied law, but never practiced it. He was an early settler here and was engaged in retail. Thedinga also held a variety of political positions, including mayor. The two-story brick structure features crow-stepped gables on the sides. It was built as an addition to a frame house in 1855. The frame structure was removed some time between 1885 and 1900. The brick structure was altered at that time so that the library was converted into a kitchen and dining room, the parlor was divided into two sections, and the lower and upper porches were added to the south side. The house was individually listed on the National Register of Historic Places in 1976, and it was included as a contributing property in the Cathedral Historic District in 1985.

The Dubuque Freight House is a historic building located in Dubuque, Iowa, United States. Built by the Chicago, Burlington and Northern Railroad (CB&N) in 1901, this was the third and last freight house built by a railroad in the Ice Harbor area. The other two facilities were built by the Illinois Central Railroad (1872) and the Chicago, Milwaukee and St. Paul Railroad (1874). These other two railroads were older, larger, and monopolized the bridge and tunnel that crossed the Mississippi River. The CB&N was fortunate that their freight house was located along the water's edge in that the river boats could tie up next to the building and load and unload cargo, and the railroad put box cars on ferries that docked in the Ice Harbor. The Dubuque Boat and Boiler Works were headquartered on the west end of the facility for 20 years beginning in 1952. Founded in 1852 as the Iowa Iron Works, they provided engines, boilers and other equipment for river boats, and water craft for the United States Navy, United States Coast Guard, and the United States Army Corps of Engineers. The building was listed on the National Register of Historic Places in 1979. It is now a part of the National Mississippi River Museum & Aquarium.