Congress Plaza Hotel
The Congress Plaza Hotel is located across South Michigan Avenue from Grant Park in Chicago at 520 South Michigan Avenue. After opening for business in 1893, for the World's Columbian Exposition, the hotel underwent two major expansions and renovations; it now features 871 guest rooms and suites. Its 11 story edifice was originally designed by architect Clinton J. Warren as an annex to the Auditorium Theater across the street. The two buildings were linked by an underground, marble-lined passage called Peacock Alley. In 1902 and then in 1907, the firm of Holabird & Roche oversaw the design and construction of two additions, bringing the total complex up to 1 million square feet.
On 15 June 2003, about 130 members of UNITE HERE Local 1 went on strike to protest a proposed seven percent wage cut.  On 16 June 2007, Barack Obama, then running for the presidency, joined the picket line briefly. He promised to return as president, but he did not. The strike, one of the world's longest, ended May 30, 2013 after nearly 10 years. No concessions were given by management.
- Kevin Robinson (2007-07-31). "Congress Strikes Back". Chicagoist. Retrieved 2011-09-04.
- "Can a deal put the Congress hotel back in session again?". WBEZ. 2012-12-20. Retrieved 2013-3-17.
- "Long Strike at Chicago Hotel Pits Jew Against Jew –". Forward.com. Retrieved 2011-09-04.
- "Strike hits 3,000 days, not giving up the fight". Daily Kos. 2011-01-09. Retrieved 2011-09-04.
- Shaw, Randy (2007-06-16). "San Francisco's Alternative Online Daily News » Will Obama Fulfill Pledge and Walk Congress Hotel Picket Line?". BeyondChron. Retrieved 2011-09-04.
- Samantha Bomkamp (2013-05-30). "10-year strike at Congress Plaza Hotel is over". Chicago Tribune.