In the spring of 2015, a billboard for the film Aloha was erected overlooking Logan Square in Chicago. It's still there today. While its fate and that of two others (mercifully blank) is fought over in court, fans of the billboard are planning a tiki party in honor of its first birthday.
Chicagocrime.org takes the Chicago Police Department's Citizen ICAM and puts it into an easily searchable -- by crime type, street, date, district or location type -- format, along with a Google Map. Who knew police station parking lots were so dangerous?
The Encyclopedia of Chicago is now online and free, less than a year after being released in book form.