Chicago Walking Tour: Modern Architecture. Embark on a walking tour of Chicago's more-recent architecture heritage with a 2-hour stroll highlighting the city's modern, postmodern, and international structures. Especially known for its architectural originality, Chi-town boasts everything from the elegant metal and glass tower of One South Dearborn to the Harold Washington Library, with its Beaux-Arts inspired exterior. Your guide will highlight these and other unique buildings, relaying background on their individual histories and construction en route. Book and Save 22%! Chicago Walking Tour: Modern Architecture.