The Congress Plaza Hotel Location 520 S Michigan AveChicagoIllinois60605 Next Event Chicago Diversity and STEM Hiring Event - March 14, 2023 - 11:00 am - 2:00 pm Loading Map.... The Congress Plaza Hotel520 S Michigan Ave - ChicagoEvents 41.875162 -87.624654 Upcoming Events Chicago Diversity and STEM Hiring Event - March 14, 2023 - 11:00 am - 2:00 pmChicago Diversity and STEM Hiring Event - October 24, 2023 - 11:00 am - 2:00 pm