The Lincoln Park Zoo is located in Chicago where there once was a cemetery. The Chicago City Cemetery was open from 1843 to 1859 and it held the remains of more than 35,000 people. Stories say that as many as 12,000 -15,000 bodies still remain under the zoo, with no way to discern where the myriad burials remained, the city simply continued its plans to create a lakefront park, and Chicago moved on. Not all of the dead, however, did.