It's hard to imagine now, but there once was a CTA elevated track running right down the middle of North Wacker Drive (then called Market Street). That photo above shows the Market Terminal at Madison Street, where the line terminated, in front of the grand Civic Opera House. The stub was demolished during the late 1940s, undoubtedly to the relief of the Opera House's owners. This memorable 1946 painting by John Falter shows a scene beneath the terminal, at roughly the spot where the lone car protrudes from underneath the structure in the photo. I walk past this intersection on a regular basis and always admire the broad, airy expanse of Wacker Drive, and although I'm normally a traditionalist, I'll admit that the demolition of the Market Stub is one act of urban renewal that I have absolutely no objection to.