Mequon Town Hall and Fire Station Complex

The Isham Day House is located in Mequon, Wisconsin. It was added to the National Register of Historic Places in 2000. The house is owned by the city and located in Settlers Park.

The Main Street Historic District was added to the National Register of Historic Places in 2004.

The Green Bay Road Historic District is located in Thiensville, Wisconsin.

Wisconsin Lutheran Seminary (WLS) is a post-secondary school that trains men to become pastors for the Wisconsin Evangelical Lutheran Synod (WELS). It is located in Mequon, Wisconsin. The campus consists of 22 buildings, including a library that has over 58,000 volumes and a collection of rare pre-18th century theological books.

Homestead High School is a four-year public high school located in Mequon, Wisconsin, United States, a northern suburb of Milwaukee. Part of the Mequon-Thiensville School District, it serves a 48-square-mile (120 km2) area including the city of Mequon and the village of Thiensville. The school opened in 1959 and educates nearly 1,300 students annually.

Thiensville is a village in Ozaukee County, Wisconsin, United States. Located on the west bank of a bend in the Milwaukee River, the community is bordered on all sides by the City of Mequon and is a suburb in the Milwaukee metropolitan area. The population was 3,235 at the 2010 census. Thiensville was the site of a Potawatomi village in the early 19th century before white settlers began arriving in the 1830s and 1840s. Many of the community's earliest settlers were German immigrants who were members of freethinker societies. One prominent freethinker was Joachim Heinrich Thien, for whom the village is named. Thien played a significant role in the Town of Mequon's early politics and organized the Thiensville Volunteer Fire Department. The freethinkers were opposed to organized religion and actively prevented churches from being established in the community for the first eight decades of its history. Thiensville grew and prospered in the late 1800s when it became a railway stop; the community became more urban with stores, mills and services for farmers in the rural Town of Mequon. The Village of Thiensville formally incorporated in 1910. Both Mequon and Thiensville experienced significant development during the suburbanization that followed World War II, with Mequon incorporating as a city in 1957. The two communities have close ties, with a shared chamber of commerce, library, and school district. In July 2005, CNNMoney.com ranked Thiensville and Mequon 19th on its list of the 100 Best Places to Live in the United States.

The Jacob Voigt House is a historic farm located in Mequon, Wisconsin, United States. It was added to the National Register of Historic Places in 2000.After the Black Hawk War in 1832, Europeans began to settle around Mequon. The first settlers were mostly Yankees, but by 1839 Germans began to join them. Jacob and Johanna Voigt were German immigrants who bought part of this farm by 1860. Jacob was a tailor, but they also raised wheat, oats, and hay on their 10 acres, and sold butter from their two cows. The Voigt family had the farm until the 1920s, when it was divided up.The main block of the house was built around 1855. It is 1.5 stories with well-constructed walls of randomly-coursed fieldstone, with corner quoins of limestone. Arches above the windows are limestone or brick. The roof is rather low-pitched, with a shed-roofed dormer - a more modern design than the original roof. In the living room is a large stone oven which may be original to the house.Also remaining is a very intact gambrel-roofed bank barn with vertical wood siding built around 1880.The NRHP considers the Voigt farmstead significant because the house is a fine example of stone construction and the farm represents German settlement in the area.

The William F. Jahn Farmstead is located in Mequon, Wisconsin, United States. The farmstead includes a farmhouse, two barns, a summer kitchen, and two outbuildings. While the farmstead is not longer used for agriculture, portions have been converted to facilitate bed and breakfast lodging.

Mequon () is the largest city in Ozaukee County, in the U.S. state of Wisconsin, and the third-largest city in Wisconsin by land area. Located on Lake Michigan's western shore with significant commercial developments along Interstate 43, the community is a suburb in the Milwaukee metropolitan area. Despite being an incorporated city, approximately half of Mequon's land is undeveloped and agriculture plays a significant role in the local economy. At the time of the 2020 census the population was 25,142. When the first white settlers arrived in the 1830s, the Mequon area was inhabited by the Menominee, Potawatomi, and Sauk people. In the 1840s, German immigrants settled in the community, building farms and hydropowered mills along the Milwaukee River. Much of the community remained rural, while Thiensville developed as a market town along the local railway, providing services to the farmers. Thiensville incorporated as a village in 1910. Mequon remained rural in the early 20th century but experienced significant population growth during the suburbanization that followed World War II. The community incorporated as a city in 1957 to avoid annexation by the City of Milwaukee. The City of Mequon completely surrounds Thiensville, leading some residents to call Thiensville "Mequon's donut hole." The two municipalities have a close relationship, with a shared chamber of commerce, library, and school district. Lutheranism has played a significant role in Mequon since the community's early years. Some of the first German settlers were Old Lutherans who founded the Freistadt community—now a neighborhood in western Mequon—in 1839 and went on to form the first Lutheran congregation in Wisconsin. In the 21st century, there are more Lutheran churches in Mequon than churches of any other single denomination. Additionally, Mequon is home to two private Lutheran post-secondary institutions: Concordia University Wisconsin and Wisconsin Lutheran Seminary. In addition to having other Christian denominations, Mequon is also the northernmost of Milwaukee's suburbs to have a sizable Jewish community.

The Edwin J. Nieman Sr. House is a historic house located at 13030 North Cedarburg Road in Mequon, Wisconsin. The house was added to the National Register of Historic Places on April 12, 1996.

The Jonathan Clark House is a historic house located at 13615 N. Cedarburg Rd. in Mequon, Wisconsin. The house was built in 1848 for Jonathan Clark, who migrated to the area from Vermont. The home was built in the Greek Revival style and is built in fieldstone with a limestone front. The house has also been used as a dentist's office.The house has been opened to the public as a historic house museum. The house was added to the National Register of Historic Places on June 2, 1982.

The Bigelow School is a historic former school located at 4228 W. Bonniwell Rd. in Mequon, Wisconsin. The one-story red brick school was built in 1929; it was one of the last schools built in Mequon and is one of many extant school buildings from the late 19th and early 20th centuries in the city. Designed by William J. Redden, the school's architecture utilizes the Classical Revival and Prairie School styles and features a hipped roof, flaring eaves, and a front entry decorated with a brick surround and a stone keystone and plaque. The school closed in the 1960s due to school consolidation.The Bigelow School was added to the National Register of Historic Places on July 27, 2000.