Jackson is a subway station on the Chicago Transit Authority's 'L' system, serving the Blue Line. This station just completed a remodeling project that made it look closer in appearance to the Jackson/State (CTA).
Also, because of the construction at Washington/State (CTA) and the subsequent closing of the transfer tunnel between Washington/State (CTA) and Washington/Dearborn (CTA), this is now the only transfer between the Blue Line and the Red Line.