AdvertisementBy Chicago TribuneApr 12, 2021 at 2:56 pmAfter decades at the center of Chicago’s retail, hospitality and real estate worlds, North Michigan Avenue faces one of its greatest challenges.More than a year into the COVID-19 pandemic, the Magnificent Mile has a large number of vacant and boarded-up storefronts, at a time when the economy is struggling to rebound.AdvertisementThe biggest hole is 323,812 square feet that mall.This creates the largest retail vacancy in the city and one of the biggest spaces ever to come available on the Mag Mile.AdvertisementIn addition to the effects...…AdvertisementBy Chicago TribuneApr 12, 2021 at 2:56 pmAfter decades at the center of Chicago’s retail, hospitality and real estate worlds, North Michigan Avenue faces one of its greatest challenges.More than a year into the COVID-19 pandemic, the Magnificent Mile has a large number of vacant and boarded-up storefronts, at a time when the economy is struggling to rebound.AdvertisementThe biggest hole is 323,812 square feet that mall.This creates the largest retail vacancy in the city and one of the biggest spaces ever to come available on the Mag Mile.AdvertisementIn addition to the effects...WW…