2300 Grand Avenue
Des Moines, Polk County, Iowa, 50312
Terrace Hill, also known as Hubbell Mansion, Benjamin F. Allen House, and Iowa Governor's Mansion, is the official residence of the Governor of Iowa. It is an example of Second Empire architecture.
The home measures 18,000 square feet (1,600 m2). It sits on a hill overlooking downtown Des Moines, and has a 90 foot (27 m) tower that offers a commanding view of the city.
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Built in the Second Empire style, Terrace Hill became a National Historic Landmark in 2003. It was built by Benjamin Franklin Allen, the first millionaire in Iowa, as a home for his family. Since 1976, it has been the official residence of the Governor of Iowa.
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