Detroit and Lake Superior Smelter

Temple Jacob is a small historic synagogue in Michigan's Upper Peninsula. It owes its origins to the copper boom in the Keweenaw Peninsula in the late 19th and early 20th century. The first Jewish synagogue in the Copper Country, it is also the oldest, continuously active Jewish House of Worship in the Upper Peninsula and the only active synagogue in Michigan listed on the National Historic Register as part of the East Hancock Neighborhood Historic District. The synagogue is located near the north end of the lift bridge which connects the two towns of Houghton and Hancock. It was built on land purchased from the Quincy Mining Company and was dedicated in September 1912. The cornerstone inscribes the building in memory of Jacob, son of Israel Gartner, who was a generous contributor and fundraiser. He died shortly before the building was completed.

Portage Lake District Library is a public library in Houghton, Michigan, which serves the city of Houghton and Portage Townships. The Portage Lake District Library participates in the Michigan eLibrary (MeL) and is a member of the Superiorland Library Cooperative. The Portage Lake District also includes a room dedicated to Michigan History and Genealogy. The Portage Lake District Library hosts events over the course of the year, ranging from storytime for children to writing workshops and author visits. These events are free and open to the public. In 2020, the Portage Lake District Library received the June B. Mendel Award for Excellence in Rural Library Service from the Library of Michigan. The bi-annual award honored Library staff for the development of non-traditional library programs for the community.Adams and Elm River Townships had been part of the library district until 1997 when they voted to sever their relationship with it. The original location was built in 1909, at the site originally occupied by the Armory Building for Company G of the Houghton Light Infantry, using a $15,000 grant from Andrew Carnegie. In 2006 the Portage Lake District Library moved to a new building on the Houghton Waterfront. The former library building became the Carnegie Museum. In November 2018, the Portage Lake District Library assumed operations of the Hancock public library located at Hancock High School.

The Keweenaw Brewing Company (KBC) is a craft brewer with a taproom in Houghton and a production facility in nearby South Range, Michigan. It is named for the Keweenaw Peninsula, which projects out to the north of Michigan's Upper Peninsula. Established in 2004, Keweenaw is the largest brewer in the Upper Peninsula (as of 2021); their products are sold there and in the nearby states/regions of Minnesota, Wisconsin, and Michigan's Lower Peninsula. Their taproom looks out over the Keweenaw Waterway and Copper Island, and their best-known beer is the Widow Maker Black Ale.

The Shelden Avenue Historic District is a commercial historic district located along Shelden, Lake, & Montezuma Avenues in Houghton, Michigan. The district contains 43 contributing buildings (including the Douglass House and the Shelden-Dee Block, both separately listed) in an area of 22 acres. It was listed on the National Register of Historic Places in 1987.

Trinity Episcopal Church is a Gothic Revival-style Episcopal church at 205 East Montezuma Avenue in Houghton, Michigan. It was designated a Michigan State Historic Site on July 17, 1986. It is the second of two church buildings to exist on the site; the current one replaced a wooden structure in 1910. The church's philosophy is built on the Oxford Movement.

The Portage Lake Lift Bridge (officially the Houghton–Hancock Bridge) connects the cities of Hancock and Houghton, in the US state of Michigan. It crosses Portage Lake, a portion of the waterway which cuts across the Keweenaw Peninsula with a canal linking the final several miles to Lake Superior to the northwest. US Highway 41 (US 41) and M-26 are both routed across the bridge. It is the only land-based link between the north (so-called Copper Island) and south sections of the Keweenaw peninsula. In June 2022, it was dedicated as a National Historic Civil Engineering Landmark.This moveable bridge is a lift bridge with the middle section capable of being lifted from its low point of four feet clearance over the water to a clearance of 100 feet (30 m) to allow boats to pass underneath. The bridge is the world's heaviest and widest double-decked vertical-lift bridge. More than 35,000 tons of concrete and 7,000 tons of steel went into the bridge, which replaced the narrow 54-year-old swing bridge, declared a menace to navigation on the busy Keweenaw Waterway.Hancock and Houghton hold an annual celebration called Bridgefest to commemorate the opening of the bridge which united their two communities.

The Houghton Fire Hall, officially called the Continental Fire Company Building, is a former fire station at the corner of Huron St. and Montezuma Ave. in Houghton, Michigan. Built in 1883, it was the original home of the Michigan Mining School. The building is listed as a Michigan State Historic Site and is a contributing property of the Shelden Avenue Historic District.

Sheldon Center is the connection of a number of restaurants, coffeehouses, stores and other businesses along Sheldon Avenue, some of its sidestreets, and Lake Street in Houghton, Michigan, United States, by means of doors between them so they can be accessed without going outside. They were formerly attached by several skyways, but as of September 28, 2008 these were in the process of being removed. Some apartments and offices, and Huron Square, can also be accessed by the system, while not being officially part of it.The center may be named after Sheldon Avenue, the street along which are the majority of its buildings or Ransom Sheldon, founder of Houghton. Stores or businesses in Sheldon Center: Center Ice Skate and Sport Cyberia Cafe Suomi Home Bakery and Restaurant Wells Fargo Bank (main Houghton branch)

The Carnegie Museum of the Keweenaw in Houghton, Michigan, is a non-collecting museum that houses changing exhibits about local cultural and natural history. The building has two stories and is made of red brick with a red Jacobsville base. Furthermore, its name originates from being built with a 1908 grant from Andrew Carnegie. It served as the public library for Houghton, Michigan from its opening in 1910 until 2006. It is the former building of the Portage Lake District Library. The building was built in 1909, at the site originally occupied by the Armory Building for Company G of the Houghton Light Infantry, using a $15,000 grant from Andrew Carnegie. The museum opened in fall 2006 after the library moved to its new location. The building was declared a Michigan State Historic Site on June 18, 1976, listed as the Houghton Public Library. On December 30, 1987, the Shelden Avenue Historic District was listed on the National Register of Historic Places, with the library as a contributing property. The building is built in the Classical Revival style.In October 2013, the museum became a Heritage Site of the Keweenaw National Historical Park.

The Douglass House is a hotel located at the corner of Shelden Avenue and Isle Royale Street in Houghton, Michigan. It was placed on the National Register of Historic Places in 1982.

The Shelden-Dee Block is a commercial building located on the corner of Shelden Avenue and Isle Royale Street in Houghton, Michigan. The building was listed on the National Register of Historic Places in 1980.

The Houghton County Courthouse is a government building located at 401 E. Houghton Street in Houghton, Michigan. It was designated a Michigan State Historic Site in 1974 and placed on the National Register of Historic Places in 1975.