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The First Leiter building (or Leiter I) was a Chicago commercial structure built in 1879 by William Le Baron Jenney. It was renovated and extended in 1888, and demolished in 1972. Jenney designed this building, located at Washington and Wells Streets, as a department store for Levi Z. Leiter. This building marked a significant milestone in architectural engineering: it combined, for the first time, four essential elements of a modern skyscraper in one building. These were: its great height (Leiter I was originally five stories tall, and shortly after expanded to seven stories); an iron skeletal frame; terra cotta fireproofing materials on all of its structural members; and, vertical transportation via elevators. It also utilized a new type of glass in its windows. Although the city building department required Jenney to build one exterior party wall as a traditional masonry loadbearing structure and the floors were of heavy timber construction, the rest of the building was a truly modern innovation.

The Franklin Center is a 60-story supertall skyscraper completed in 1989 as the AT&T Corporate Center to consolidate the central region headquarters of the American Telephone & Telegraph Company (AT&T). It stands at a height of 1,007 ft (307 m) and contains 1.7 million sq ft (160,000 m2) in the Loop neighborhood of downtown Chicago. It is located two blocks east of the Chicago River and northeast of the Willis Tower with a main address of 227 West Monroe Street and an alternate address of 100 South Franklin Street in the Loop community area of downtown Chicago. The supertall building is the tallest constructed in Chicago in the last quarter of the 20th century. It is the 6th tallest building in Chicago and the 23rd tallest in the United States. It contains office and retail space and a 350-space garage.Tishman Speyer acquired the property in 2004 and renamed the adjacent USG Building as Franklin Center in 2007 after USG relocated its offices. The name was later applied to the entire complex.

The Miglin-Beitler Skyneedle was a proposed 125-floor skyscraper intended for Chicago, Illinois, United States, by Lee Miglin and J. Paul Beitler and designed by architect César Pelli. The site of the proposed Skyneedle now is host to a parking garage. If it had been built when it was planned, the 1,999 ft (609 m) tall Miglin-Beitler Skyneedle would have been the tallest building in the world.The tower's plans were unveiled in 1988. The plans would falter due to the post-Gulf War market downturn. Miglin-Beitler held hopes of reviving the project, but these were dashed by the murder of Lee Miglin.The tower would have risen 125 floors and 1,999 feet. It would have had 1.9 million square feet of space (with 1.2 million being office space). It was planned to cost $450 million to construct. As of July 1990, it was tentatively planned to open in 1993.The firm had believed that the observation deck planned atop the tower, as well as the twelve floors of parking at its lower levels, would produce large amounts of revenue. Plans also called for the building to include a two-story health club. Office space in the building would have been marketed to smaller yet prestigious firms. The goal was to attract law firms and other tenants desiring a high-status location, but needing only between 8,000 and 10,000 square feet of office space.There were a number of challenges facing the project before the post-Gulf War economic downturned ultimately doomed it. This included the earlier savings and loan crisis putting in place a stricter regulatory climate for banks and credit unions, which made many financial institutions wary of large real estate projects as investments. Another challenge was that the Chicago real estate market, particularly in its downtown, was "soft". The downtown had an office space vacancy of 14%, which was on the rise. Additionally, millions of additional square feet of office space was already under construction in downtown Chicago, with millions more to open up with Sears moving out of the Sears Tower for a new suburban headquarters. Another challenge that analysts predicted was that larger corporate tenants might avoid the building, as its narrow floorplates would require firms needing larger amounts of office space to locate their offices across several floors. This could prevent the building from attracting large "anchor" tenants.Across Wells Street from the site where the tower was to be built is another Pelli project previously developed by Miglin-Beitler, 181 West Madison Street, which reportedly inspired the general design of the Skyneedle. Visually the upper floors of the Skyneedle do appear to be similar to a stretched 181 W Madison. Across Madison Street from the site where the tower was to be built is 200 West Madison, another building developed previously by Miglin-Beitler.César Pelli also designed the Petronas Towers in Kuala Lumpur. The Petronas Towers have an obvious design reference, with the exception of having round floorplates as opposed to square ones.

71 South Wacker is an American office tower in Chicago completed in 2005. The 48-story skyscraper stands at 679 feet (207 m) on 71 South Wacker Drive. It is owned by the Irvine Company. The 1,765,000 square foot (164,000 m²) building contains 65,000 cubic yards (50,000 m³) of concrete and 12,000 tons of structural steel. It took about 2,700 truckloads to excavate the building's foundation, and 1,300,000 man hours over nearly two years to finish. Twenty-eight high speed elevators serve the building. The building features extensive landscape design by Chicago's Hoerr Schaudt Landscape Architects, both inside and outside, from bamboo groves, complete with fountains, lining the modern lobby to lush green grass in raised curved stone planters on the building's south side. 71 South Wacker also contains art panels by Keith Tyson and a trompe-l'œil mural by Ricci Albenda. The anchor tenants of the building include Colliers International, Benesch Law, EVRAZ North America, Columbia Threadneedle Investments and Mayer Brown LLP. The floor 2 cafe is available to all tenants and registered guests.

Wells Street is a major north–south street in Chicago. It is officially designated as 200 West, and is named in honor of William Wells, a United States Army Captain who died in the Battle of Fort Dearborn. Between 1870 and 1912, it was named 5th Avenue so as not to tarnish the name of Wells during a period when the street had a bad reputation.Wells Street is interrupted by Guaranteed Rate Field, Interstate 55, and Lincoln Park. Wells Street crosses the Chicago River at the Wells Street Bridge. Some downtown blocks of Wells Street are located beneath the Chicago 'L' train system. The first Crate & Barrel store, which opened in 1962, was located on Wells Street.Wells Street was named in Time Magazine's 1976 article "The Porno Plague".

200 West Madison is a skyscraper in Chicago, Illinois. The building rises 599 feet (182 m) in the Chicago Loop. It contains 45 floors, and was completed in 1982. 200 West Madison currently stands as the 52nd-tallest building in the city. The architectural firm who designed the building was Skidmore, Owings & Merrill, the same firm who designed Chicago's Willis Tower and John Hancock Center and the Burj Khalifa in Dubai. The building was designed with a "sawtooth edge," and incorporates six corners onto the southeast face of the building. Thus, the building has nine corner offices on most of its floors. Originally named "Madison Plaza," the building was proposed to have a twin tower located on the lot situated south of the tower. However, plans for a second tower were ultimately abandoned. Six years later, in 1988, the Miglin-Beitler Skyneedle was proposed for construction on the same lot, adjacent to 200 West Madison. Plans called for 125-story tower that was to rise 2,000 ft (610 m). However, that plan was also eventually cancelled. The lot is now the site of a parking garage.200 West Madison is the location of "Dawn Shadows," a famous black metal sculpture created by Louise Berliawsky Nevelson. The sculpture was brought to the plaza in 1983.

Harrington College of Design (1931–2015) was a for-profit college in the Loop area of Chicago, Illinois, USA, that closed in 2015. It offered students programs leading to either a master's, bachelor's or associate's degree upon completion of the interior design, digital photography or communication design programs. Each program was credentialed with multiple levels of accreditation. The college was owned by Career Education Corporation.

Madison/Wells was a station on the Chicago Transit Authority's Loop. The station was located at 1 North Wells Street in the Chicago Loop. Madison/Wells opened on October 3, 1897, and closed on January 30, 1994, and demolished so that work on the new Washington/Wells station could begin. This station and Randolph/Wells were replaced by Washington/Wells. The station was located at Madison Street and Wells Street in the Chicago Loop.

One South Wacker is a 550 ft (168 m) tall skyscraper in Chicago, Illinois, United States. It was constructed from 1979 to 1982 and has 40 floors. Murphy/Jahn, Inc. Architects designed the building, which is tied for the 72nd tallest building in Chicago. The tower is featured in the music video for the Daft Punk song "Burnin'".

181 West Madison Street is a skyscraper located in Chicago managed and leased by MB Real Estate. Built in 1990, the building is 680 feet (207 m) tall and contains 50 floors. It is architect Cesar Pelli's first and only completed tower in the city. The building was constructed by Miglin-Beitler Developments.The glassy office tower's most distinctive feature is its recessed crown. The top of the building is illuminated white at the corners, as well as other various colors depending on the holiday. In 1989, the same combination of developer (Miglin-Beitler Developments) and architect envisioned the Miglin-Beitler Skyneedle nearby. The 2,000 foot (610 m) and 125-story building would have been the tallest skyscraper in the world if completed, but plans were scrapped because of a sluggish real estate market.

The Heartland Institute is an American conservative and libertarian public policy think tank known for its rejection of the scientific consensus on climate change and the negative health impacts of smoking.Founded in 1984, it worked with tobacco company Philip Morris throughout the 1990s to attempt to discredit the health risks of secondhand smoke and lobby against smoking bans.: 233–234  Since the 2000s, the Heartland Institute has been a leading promoter of climate change denial.

Taylor Business Institute Chicago is a private for-profit career college in Chicago, Illinois. It was founded in 1962 and awards associate degrees and certificates.