With so many great buildings on beaches along Chicago’s lakefront, we’re kicking off a summer series for our biweekly "What's That Building?" segment where we explore their history. First up: the story behind the beach house at Calumet Park Beach on the city’s far South Side. It holds a powerful story about segregation and access to the lakefront. Our architecture expert and a leader with the company that manages concessions at Park District facilities tell us more.