A massive art project is already gone but not so easily forgotten.

James "Big Cat" Williams breaks down the turnovers and shoddy tackling that led to the Bears' first loss of the season against the Detroit Lions. Watch a web extra video.

Melanie Kupchynsky has been a violinist for the Chicago Symphony Orchestra for more than 20 years. She began playing the violin at the age of 4 and her first teacher was her father, known to everyone else as “Mr. K.” After her father's death, Kupchynsky co-wrote a book called Strings Attached, recounting the lessons learned from her father. Read an excerpt from the book, view photos, and listen to music clips.

A book called Picturing Illinois takes a look back in time through Chicago history using picture postcards. We revisit a conversation with the book's authors. View a slideshow.

A fiesta at the zoo, free jazz concerts, and a Bunky Echo-Hawk exhibit at the Field Museum; Chicago Tonight knows what's going on this weekend.

Former WTTW reporter and Pulitzer Prize finalist Judy Valente first visited Mount St. Scholastica monastery to lead a retreat for busy professionals. She kept returning to the monastery in Atchison, Kansas as a student. She shares her journey of spiritual healing in her new book, Atchison Blue. Read an excerpt.

Chicago music legend Curtis Mayfield is remembered onstage at Black Ensemble Theater. We talk with the two men who portray Mayfield in the play, including one who knew him. Read an interview with the theater's founder and watch a web extra video of Mayfield from WTTW's archives.

Playful painter, serious warrior: meet Bunky Echo-Hawk.

Looking back at a couple of influential dancers, and looking ahead to a weekend dance concert.

Still gathering stories on Janis Joplin's final Chicago-area performance...

At half an acre, the rooftop garden atop McCormick Place West is the largest in the entire region. We revisit the backstory behind this little-known space. Read an article.

Frank Lloyd Wright’s apprentice brought the Prairie School of Architecture to Europe. We take a look at the innovations of architect Barry Byrne with Vincent Michael, the author of The Architecture of Barry Byrne. Read a book excerpt and view a slideshow.

Another look at a truly unusual performance by Eric Clapton -- with additional photos.

In recent remarks, Pope Francis says the Roman Catholic Church has become “obsessed” with abortion, gay marriage and contraception.

The Bears pound Pittsburgh in primetime to remain undefeated. James "Big Cat" Williams joins us for his weekly post-game analysis. Watch a web extra video.