Harsens Island

Sans Souci is an unincorporated community in St. Clair County in the U.S. state of Michigan. The community is located within Clay Township. The community is located along the St. Clair River on the eastern coast of Harsens Island. The community itself is also referred to as Harsens Island, which is the name of the post office that serves the island and several smaller outlying islands near the river mouth on Lake St. Clair.

Tashmoo Park was an amusement park in Algonac, Michigan. Opened in 1897, it closed in 1951. Most of it was later demolished, though the dance pavilion remains today, used by a marina to store recreational boats over the winter. The park's name was given to the steamer Tashmoo and probably comes from Lake Tashmoo on Martha's Vineyard. The park was located on Harsens Island in the St. Clair Flats at the northern end of Lake St. Clair. The St Clair Flats is the largest freshwater river delta in the world. Tashmoo Park offered visitors an escape from the oppressive heat and humidity of packed, sweltering Detroit in the summertime. Tashmoo Park had picnic tables, a baseball diamond, swings and rides, as well as a casino and a dancing pavilion. Some visitors swam in the St Clair River. Indians from nearby Walpole Island sold moccasins and beadwork. The park was served by many steamships that travelled several times a day between Detroit and Port Huron, Michigan, delivering passengers and freight. This was during a time when automobiles were rare and roads few. However, the connecting waters of the Great Lakes made steamships travel almost like riding a bus, and up to 250,000 people visited Tashmoo Park in the summers during the 1890s and early 20th century. The most famous steamer was the Tashmoo, which stopped twice daily on trips between Detroit and Port Huron. The park was revived to memory in June 2013 when Dave Leander took a dive in the St. Clair River and found a buried bottle with a message containing a reference to the park. The letter was dated June 30, 1915.

Chris-Craft Boats was an American boat manufacturer founded by Christopher Columbus Smith (1861–1939). The company was sold by the Smith family in 1960 to NAFI Corporation, which changed its name to Chris-Craft Industries in 1962. The current successor is Chris-Craft Corporation, which produces motorboats under the Chris-Craft name.

Russell Island is a small private island in the St. Clair River in the U.S. state of Michigan between Algonac and Walpole Island, Ontario, Canada. It is immediately upriver from Sand Island which is itself immediately upriver from Harsens Island; it includes two smaller islands, Anderson Island on the northwest, and "The Gold Coast" on the southwest. The island, which is accessible only via passenger ferry or by private watercraft, contains about 150 cottages. There are no cars on the island; the only motorized vehicles are golf carts. Russell Island is part of Clay Township in St. Clair County and is an acceptable name for the Algonac ZIP code 48001, which serves most of the township on the mainland.

Algonac ( AWL-gə-nack) is a city in St. Clair County of the U.S. state of Michigan. The population was 4,196 at the 2020 census. Incorporated as a village in 1867 and again as a city in 1967, Algonac is located at the southern end of the St. Clair River and contains a long boardwalk and riverfront park. Algonac State Park is located just north of the city. The city is also notable for the founding and headquarters of the now-defunct Chris-Craft Boats company.

The Walpole–Algonac Ferry is a passenger and vehicle ferry connecting Walpole Island, Ontario, Canada, and Algonac, Michigan, United States, via the St. Clair River. It serves as a border crossing of the Canada–United States border. The ferry has existed in some form since at least 1922, and is currently operated by Walpole Algonac Ferry Ltd., a private company based in Canada. Since the closures of the Bluewater Ferry in 2018 and the Detroit–Windsor Truck Ferry in 2023, it is the only ferry operating between Michigan and Ontario.

Clay Township is a civil township of St. Clair County in the U.S. state of Michigan. The population was 9,066 at the 2010 Census. The township is located along the mouth of the St. Clair River at Lake St. Clair, and the river delta includes Harsens Island and numerous other islands. The township mostly surrounds the city of Algonac, but the two are administered autonomously since Algonac incorporated as a city in 1967.

Pearl Beach is an unincorporated community and census-designated place (CDP) in St. Clair County in the U.S. state of Michigan. The population of the CDP was 4,698 at the 2020 census. The community is located within Clay Township.

The LeRoy Smith House is a private house, designed by Alden B. Dow, and located at 9503 Frank Street in Algonac, Michigan. It was listed on the National Register of Historic Places in 1996.

Algonac State Park is a public recreation area covering 1,550 acres (630 ha) along the St. Clair River, two miles north of the city of Algonac in St. Clair County, Michigan, United States. The state park's half mile of river frontage offers a view of passing international freighters.

CFRZ-FM is a radio station which broadcasts a First Nations community radio format on the frequency of 98.3 MHz (FM) in Walpole Island, Ontario, Canada.

The Colony Tower Complex is a decorative water tower, with a gate and gatehouse, located at 6503 Dyke Rd. (M-29) in Pearl Beach, Michigan. The tower was listed on the National Register of Historic Places in 1994, and the gatehouse joined it in 1995.