What if Cincinnati's old subway tunnels became an underground food hall and art market? Or canals for kayaking? Or speakeasy spots? The city asked for ideas on what to do with the unused subway ...

Sometimes it’s a marvel the system functions at all. Hemchandra Singh (left) and Joshua Zailabdeen stacking old subway wheels to be recycled. Gay Burdick tending to an “end destination” sign ...

Shown here: a large banquet hall on the subway platform and glass floors hovering above the old rail lines. Merriman Anderson Architects proposed a speakeasy and event center that could host ...