William Dwelley House

The Old St Croix County Courthouse is a former courthouse built in Hudson, Wisconsin in 1900. It was added to the National Register of Historic Places in 1982. The building housed the circuit court of St. Croix County, Wisconsin from 1900 until 1966. It then served as a county office building until 1993, when the county constructed its current courthouse and government center. The old courthouse is a private residence.It is Richardsonian Romanesque in style. It was deemed "One of the finest of the state's courthouses designed in the Richardsonian manner" and described as "a symmetrical assemblage of Romanesque elements."

The Octagon House House Museum, also known as the John Moffat House, is a stucco octagonal house in Hudson, in the U.S. state of Wisconsin. The home was built in 1855 by John Moffatt (1814 Etna, New York-1903 Hudson, Wisconsin) and his wife, Nancy Bennet (1822-1894), who had moved to Hudson from Ithaca, New York the previous year with their ten-year-old daughter. Typical for the time, the Moffats traveled by train to Galena, Illinois where they took a steamboat to Prescott, Wisconsin. Then they traveled by horse and wagon, north to Hudson, which was a prosperous frontier town on the Saint Croix River, benefiting from lumber and flour mills. Two of Nancy's sisters already lived in the community when they arrived. Moffat initially was clerk of the United States Land Office for the Chippewa District and later practiced law before being elected a Saint Croix County judge in 1869. Their home is listed on the National Register of Historic Places. The house is now owned and operated by the St. Croix County Historical Society as the Octagon House Museum, a historic house museum furnished in mid-19th-century style. The society purchased the home in 1964.

The William H. Phipps House is a historic house located in Hudson, Wisconsin. It was added to the National Register of Historic Places on June 18, 1987. Its NRHP nomination states:The William H. Phipps house epitomizes fanciful Queen Anne architecture with its octagonal tower, multiple verandahs and balconies and exterior facade ornamentation using octagonal shingles and various applied wood detail. The interior complements the architectural quality using hardwoods, often carved in the minutest detail. The elegant Queen Anne style home built in 1884, is one of the showplaces in Hudson and continues to be one of the finest examples of the style of architecture to be found in the St. Croix Valley. In 2018 it serves as Phipps Inn Bed & Breakfast.

The Frederick L. Darling House is a historic house located at 617 Third Street in Hudson, Wisconsin. The two-story, Greek Revival style house was built in 1857 by Amasa and Ammah Andrews. It was added to the National Register of Historic Places on October 4, 1984.It is a two-story L-shaped building on a stone foundation. It has a pedimented gable portico supported by four octagonal columns on its east side.It has also been known as Darling-O'Brien House.

The Hudson Public Library is located in Hudson, Wisconsin.

The Samuel T. Merritt House is located in Hudson, Wisconsin, United States. It was added to the National Register of Historic Places in 1984.It is a two-story Italianate house upon a stone foundation which was bought by Samuel T. Merritt in 1862. Merritt was a teacher, who moved from New York State to here.Merritt became wealthy through business ventures including by being "the first to ship wheat down the (St. Croix) river to La Crosse, ...by barge, with a boat 'Viola', which was built in Hudson". Merritt was "A devout Baptist and Republican, ....recognized as a highly prominent and influential citizen, revered as 'starting out in life poor in pocket, but rich in the possession of health, courage, and ability. His success has not come...by any royal road, but through careful plodding work, good investments, and excellent management, while the ...esteem in which he has held has been honestly won by honorable methods and a pleasing personality.'" After he purchased the house in 1862, he lived in it from 1867 to his death in 1918.

The Herman L. Humphrey House is located in Hudson, Wisconsin, United States. It was the home of U.S. Representative Herman L. Humphrey. The house was added to the National Register of Historic Places in 1984.It is a two-story brick Italianate-style house on a stone foundation.

The Lewis-Williams House is a historic house located in Hudson, Wisconsin. It was added to the National Register of Historic Places in 1985.It is a one-and-a-half-story "romantic" Gothic Revival cottage overlooking the St. Croix River. It has multiple steep gables "ornamented with finials and heavy elaborate wooden bargeboard with pendants." It was bought by Dr. Boyd T. Williams in 1930 and used as a cancer treatment facility. Williams died in 1948; the house remains as a "historic representative of the locality's development of health services and the last surviving symbol of Dr. Boyd T. Williams' medical contributions."

Hudson is a city and county seat of St. Croix County, Wisconsin, United States. As of the 2020 United States census, its population was 14,755. It is part of the Minneapolis–St. Paul Metropolitan Statistical Area (MSA). The village of North Hudson is directly north of Hudson.

Lake Mallalieu is located in St. Croix County, Wisconsin just inside of North Hudson, Wisconsin. The man-made lake is 289 acres with a maximum depth of 17 feet. It is a flowage lake almost on the Minnesota border connected to both the Willow River and the St. Croix River.

North Hudson is a village in St. Croix County, Wisconsin, United States. The population was 3,768 at the 2010 census.

Hudson High School is a public secondary school serving grades 9 through 12 in Hudson, St. Croix County, Wisconsin, United States. Hudson High School is located on the St. Croix River on the border of Wisconsin and Minnesota. For the 2015-16 school year, the enrollment was 1,749.