A popular student gathering space, the Memorial Union Building was named to honor alumni who died in World War I, World War II, the Korean War, and recent conflicts. It houses a dining center where students, faculty, and staff can find a variety of breakfast and lunch options.

The Campus Bookstore on the first floor is a great place to purchase new and used textbooks, school supplies, Michigan Tech apparel, and gifts. Student organization offices are also located on the first floor. Plus, the MUB features meeting rooms and ballroom space.

The John Edgar McAllister Welcome Center, a 3,000-square-foot addition to the building, houses the Admissions Office. What was once a bowling alley in the building's basement is now the University's makerspace.