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(Roman Boed / Flickr)

Geoffrey Baer dives into the history of Chicago’s water and answers viewer questions about ghostly paper images haunting a South Side neighborhood and memories of a space-themed park.

ZooLights kicks off Friday at Lincoln Park Zoo. (Courtesy of Lincoln Park Zoo)

Helicopter tours, helium balloons, Amy Schumer and Julie Andrews usher in the Thanksgiving weekend. Here are 10 things to do in and around Chicago.

Live music, fall festivals and skateboarding felines usher in the weekend. Here are 10 things to do in and around Chicago.

Pack a picnic and settle in at Millennium Park for this weekend's Chicago Jazz Festival. (Courtesy City of Chicago)

Soak up the long summer weekend with cool jazz, world beats, Polish beer and a picnic or two. We've got top picks for city and suburban events this holiday weekend.

A wave of swimmers start their race in Lake Michigan at the 2015 Chicago Triathlon. (Courtesy of Transamerica Chicago Triathlon)

Cheer on Chicago athletes, shop for fall accessories, take in an outdoor movie, sip sangria on a sprawling lawn, run through mud, watch dashing dogs and more this weekend.

Lee “Scratch" Perry performs this weekend at the inaugural Reggae Fest Chicago. (Courtesy Reggae Fest Chicago)

Take in live music, pedal through city streets in the wee hours, line up for an iconic parade and sip wine in the suburbs. Get details on those events and more things to do this weekend.

Taste of Chicago (Courtesy City of Chicago)

Eat your way through 200 menu items at the 36th annual mega-fest in Grant Park, where Billy Idol and Sheila E. are among this year's musical guests. Get details on that event and others in this week's roundup.

Celebrate the start of festival season with outdoor events in Lakeview, Lincoln Park, Skokie, Edgebrook, Oak Park and beyond.

A hugely popular exhibit exploring an underground Cuban art movement comes to the DuSable Museum this week.

Roundtable talk Thursday afternoon, weekend performance focus on efforts to bring new voices to new music

Internationally renowned composer and percussionist Kahil El’Zabar, who has played alongside Dizzy Gillespie, Stevie Wonder and Paul Simon, joins a discussion about inclusion among modern composers of color. On Friday, he performs with Fulcrum Point New Music Project.

Chicago Teachers Union Vice President Jesse Sharkey started his day at Roosevelt High School in Albany Park. He hopes Friday’s walkout sparks action on the state budget. At Beasley Elementary in the Washington Park neighborhood, CTU President Karen Lewis rallied her troops and argued funding is exactly what the strike is about.

The DuSable Museum of African-American History has been granted a special status by the Smithsonian Institution – a move the museum says marks the beginning of a long-term collaboration between the two institutions.

The Greater Metropolitan Missionary Baptist Church at 59th Street and Wabash Avenue is the polling place for the 12th Precinct of the 20th Ward. It's in the Washington Park neighborhood, a largely low-income, African-American community. It's also within Democratic State Rep. Ken Dunkin's 5th Legislative District.

Designed by famed Chicago architect Daniel Burnham, the 61,000-square-foot structure was first a 19th century stable, later housing theatrical costumes and sets in the 1930s. But now it looms, cold and vacant, across the street from its sister, the DuSable Museum of African American History – another Burnham original which has tried unsuccessfully for more than 10 years to bring the empty stable back to life.  

David Adjaye

“Buildings can transform. They can change places. They can change the perception of places." That was architect David Adjaye’s message to a group of about 20 community leaders he met with on Tuesday at the DuSable Museum of African American History.

Geoffrey Baer

Where was Bacon's Arena, the site of Joe Louis' first pro match?

In this edition of Ask Geoffrey, our local history expert goes ringside at Joe Louis' first professional knockout, rides by the site of long-lost Logan Square mansion, and finds out what's cooking at a former bread-baking palace.