Question: Over what years was the city hall on top of which the Rathausmann is located constructed?
Context: The Eldorado City Hall, located at 1604 Locust St., is the former city hall of Eldorado, Illinois.  Built in 1924, the building was Eldorado's first city hall; prior to its construction, the city government had been operated from the mayors' businesses.  The architectural firm of Harry E. Boyle and Co. designed the building in the Classical Revival style.  The brick building features a second-story entrance, brick quoins at each corner, a large dormer with a semicircular window on the front facade, and soffit ends supported by wooden brackets below the dormer.  In addition to serving as the city hall, the building housed Eldorado's fire department, jail, and public library.  The city continued to use the building until 1994, when a new building was constructed; the old city hall is now a local history museum. The Freeport City Hall, located at 230 West Stephenson Street, is the historic city hall of Freeport, Illinois.  The city hall was built in 1899 to replace the previous city hall, which the city built in 1868 and had outgrown.  Architect David S. Schureman designed the Richardsonian Romanesque building; his design included a red stone exterior, a barrel ceiling decorated with frescoes, and a main staircase with an iron balustrade.  The building's frieze lists the names of important figures in science and literature; the first letters of each name spell out Schureman's name, a loophole he exploited when city leaders denied his request to put his name on the cornerstone.  The city hall served the city continuously from its opening until 2011, when city government moved elsewhere due to safety issues; it also held the city's police and fire departments for a time.  It was also the site of several civil rights milestones for the city, as its first African-American alderman was elected and its first African-American police officer hired during the building's tenure. West Frankfort City Hall, located at 108 N. Emma St., is the former city hall of West Frankfort, Illinois.  The city hall was built in 1921 to serve the city, which had no city hall up until that time.  West Frankfort was first settled in 1895, when the Frankfort railway station was built 1.5 mi west of Frankfort; the original city of Frankfort merged into West Frankfort in 1923.  The city hall is a two-story brick building which was built by contractor S. M. Wilson at a cost of $35,000.  It was used as the city hall through 1979, when a new City Hall was constructed; the building is now used by meetings of the West Frankfort Civic Center Authority. Wiener Rathaus (also "Neues Rathaus") is the city hall of Vienna, located on Rathausplatz in the Innere Stadt district.  Constructed from 1872 to 1883 in a Neo-Gothic style according to plans designed by Friedrich von Schmidt, it houses the office of the Mayor of Vienna as well as the chambers of the city council and Vienna "Landtag" diet. The Pontiac City Hall and Fire Station is a historic building located at 110 W. Howard St. in Pontiac, Illinois, which served as both Pontiac's city hall and fire station.  The building was constructed in 1900 to replace an 1883 building which also served as both a city hall and a fire station.  Architect John H. Barnes designed the building in the Romanesque Revival style.  Though built as a single building, the city hall and fire station are separated on the interior; a bell tower connects the two buildings.  The building housed both Pontiac's city government and fire protection services until 1986. Hayward City Hall is the third and current Hayward city hall building, located in downtown Hayward, California, United States.  next to the Hayward BART Station.  The city hall opened in January 1998, replacing the abandoned City Center Building, which served as Hayward's city hall for 29 years from 1969 to 1998.  Hayward's first city hall, which is also closed to the public, is now in the Alex Giualini Plaza, three blocks away. Benjamin C. Moore Mill is a historic flour mill, waterworks, and city hall building located at Lockport in Niagara County, New York.  It is a stone structure built in 1864, as a flour mill for the Benjamin C. Moore Company.  Around 1884, it was converted for use as the Holly Water Works, a pioneer in the development of central pumping systems in this country.  In 1893, the rear addition was constructed and the building was converted for use as city hall for the City of Lockport.  It was city hall until 1974, when the new city hall opened.  It now operates as a welcome center. Rathausmann is a monument on the top of Rathaus, Vienna, Austria.  Rathausmann is one of the symbols of Vienna. Phoenix City Hall is the city hall for the City of Phoenix, Arizona, United States.  Located in Downtown Phoenix, the building rises 20 floors and 368 ft in height.  It was designed by architectural firm Langdon Wilson, began construction in 1992 and was completed in 1994.  This building replaced the former city hall, now known as Old City Hall.  The total cost to build city hall, construct its adjacent parking garage and renovate the Old City Hall was US$83 million. Miami City Hall is the local government headquarters for the City of Miami, Florida.  It is located in the former Pan American Terminal Building on Dinner Key, which was constructed in 1934 for the former International Pan American Airport.  The old Pan American Airlines terminal building has served as the Miami City Hall since 1954.  An earlier city hall, located elsewhere, designed by Walter De Garmo was demolished.  The terminal building/city hall was added to the U.S. National Register of Historic Places on February 20, 1975.
Answer: 1872 to 1883