110 North Wacker

The Washington Street Tunnel was the first traffic tunnel under the Chicago River. J.L. Lake was awarded the contract to construct the tunnel in July 1867 and its construction was completed January 1, 1869. This tunnel was 1605 feet long, from Franklin Street west to Clinton Street, and cost $517,000.

Randolph/Market was a station on the Chicago "L"'s Lake Street Elevated, serving its Market Street stub between the main line and the Market Street Terminal. It was the only intermediate station on the Market Street stub, and on any of Chicago's terminal stubs. It opened with the rest of the Elevated on November 6, 1893. After the Loop was built downtown, only overflow and express services ran on the Market Street stub. The stub, and Randolph station, closed on April 5, 1948, and was demolished shortly afterwards.

The Randolph Street Bridge is a bridge that crosses the Chicago River in downtown Chicago, Illinois.

The Washington Boulevard Bridge is a bridge that spans the Chicago River in downtown Chicago, Illinois, United States.

The Civic Opera House, also called Lyric Opera House is an opera house located at 20 North Wacker Drive in Chicago. The Civic's main performance space, named for Ardis Krainik, seats 3,563, making it the second-largest opera auditorium in North America, after the Metropolitan Opera House. Built for the Chicago Civic Opera, today it is the permanent home of the Lyric Opera of Chicago. It is part of a complex with a 45-story office tower and two 22-story wings, known as the Civic Opera Building that opened November 4, 1929 and features Art Deco details.

The Civic Opera Building is a 45-story office tower (plus two 22-story wings) located at 20 North Wacker Drive in Chicago. The building opened November 4, 1929, and has an Art Deco interior. It contains a 3,563-seat opera house, the Civic Opera House, which is the second-largest opera auditorium in North America. Today, the opera house is the permanent home of the Lyric Opera of Chicago. Samuel Insull envisioned and hired the design team for building a new opera house to serve as the home for the Chicago Civic Opera, as the company was called. The building is shaped like a huge chair, sometimes referred to as "Insull's Throne." Insull directed the chair should face west to signify turning his back on New York. Insull had left a vice presidency at General Electric in New York in 1892, after he was not named its president. Subsequently, he moved to Chicago and became president of Chicago Edison (Commonwealth Edison). Insull selected the architecture firm Graham, Anderson, Probst & White who were responsible for several other buildings in the downtown Chicago Loop. As they did on other occasions, the architects commissioned Henry Hering to produce architectural sculpture for the building. Mary Garden of the Chicago Civic Opera announced on July 15, 1929, that the opera's inaugural season would include the commissioned work of Hamilton Forrest entitled Camille.During the 1950s and 1960s the building was identified by a large "Kemper Insurance" sign, although it was not that company's headquarters. In 1993, the Lyric Opera of Chicago purchased the opera house facilities in the building it had rented for 64 years. In 2012, Tishman Speyer Properties L.P. sold the 915,000 square feet (85,000 m2) office tower portion of the building for $125.8 million to an affiliate of Nanuet, N.Y.-based Berkley Properties LLC.

The National Uniform Billing Committee (NUBC) is the governing body for forms and codes use in medical claims billing in the United States for institutional providers like hospitals, nursing homes, hospice, home health agencies, and other providers. The NUBC was formed by the American Hospital Association (AHA) in 1975. All the major national provider and payer organizations participate in discussions and decisions on policy and guidelines.In 1982, after much work and debate, the UB-82 emerged as the endorsed national uniform bill. After an 8-year moratorium on change, the UB-82 was replaced by UB-92, and became the standard for billing paper institutional medical claims in the United States, until creation of the UB-04. With the onset of HIPAA and the transition to electronic claims submission for reimbursement, NUBC has become the steward of the related data specifications for medical claims coding on electronic institutional claims.

The Boeing International Headquarters (colloquially known as the Boeing Building and formerly known as the Morton-Thiokol International Building) is a 36-floor skyscraper located in the Near West Side of Chicago. The building, at 100 North Riverside Plaza, is located on the west side of the Chicago River directly across from the downtown Loop. The building was designed with a structural system that uses steel trusses to support its suspended southwest corner in order to clear the Amtrak and Metra railroad tracks immediately beneath it. The building was originally constructed for the Morton Salt Company in 1990, but became largely vacant a decade later after the company was acquired and downsized. Boeing moved their corporate headquarters there in 2001 when they opted to leave Seattle for Chicago. Navteq moved their headquarters to the Boeing Building in 2007. It has also housed offices of Ameritech.. By 2021, with Boeing executives handling political and economical fallout from the Boeing 737 MAX groundings and the impact of the COVID-19 pandemic on aviation, Reuters reported that the shift in priorities rendered the building a "ghost town". Boeing ultimately announced the following year that it would move its corporate headquarters to Arlington, Virginia, where its defense division is located; the division relocated there from St. Louis in 2017.

American College of Education is a private, online for-profit college based in Indianapolis, Indiana, focused on education, healthcare, and nursing. American College of Education is a certified B Corporation, and a subsidiary of ACE Holdco PBC of Dallas, Texas.American College of Education confers degrees in a variety of programs, including a Master of Education in Educational Leadership, Master of Education in Curriculum and Instruction, Master of Education in Early Childhood Education, and a Master of Education in Educational Technology. Ed.D. and Ed.S. in Leadership degrees were launched in 2013. A Bachelor's in Healthcare Administration was added in 2017, and a RN to MSN program followed in 2018. The American College of Education RN to MSN program is an accelerated program for registered nurses to earn a bachelor's degree on the way to a Master of Science in Nursing. All courses are taught online.

155 North Wacker is a 48-story skyscraper located in Chicago, Illinois designed by Goettsch Partners and was developed by the John Buck Company. It stands 638 feet (195 m). It has received LEED silver pre-certification. The construction started in 2007 and was completed in 2009.

The Market Street Terminal was a station on the Chicago "L"'s Lake Street Elevated – today part of the Green Line – between 1893 and 1948. The Elevated's original downtown terminus, it opened at the corner of Madison Street and Market Street (modern-day Wacker Drive) on November 6, 1893, alongside the rest of the Elevated. When the Loop was constructed in 1895, the Terminal was required to be demolished but no action was taken. When it closed in 1948, only overflow traffic served it. It was demolished shortly thereafter for the construction of double-decked Wacker Drive.

The Wigwam was a convention center and meeting hall that served as the site of the 1860 Republican National Convention. It was located in Chicago, Illinois, at Lake Street and Market (later Wacker Drive) near the Chicago River. This site had previously been the site of the Sauganash Hotel, Chicago's first hotel. This is where supporters ushered Abraham Lincoln to the party nomination and the eventual U.S. Presidency. The location at Lake and Wacker was designated a Chicago Landmark on November 6, 2002. The name "Wigwam", although separate structures, was later associated with host locations for both the 1864 Democratic National Convention and the 1892 Democratic National Convention in Chicago.