Although it gets more daily traffic than Midway Airport, Chicago’s main rail hub remains little more than a waypoint for most people—a bustling transit station buried beneath an often empty Beaux Arts volume. The Metropolitan Planning Council wants to change that. Their new placemaking contest, Activate Union Station, calls on architects, landscape architects, planners and designers of all stripes to submit ideas for a design-build program that will enliven the underused West Loop hub. Two winners will receive $5,000 each to make their ideas happen at any of three Union Station hotspots between Aug. 24 and Sept. 2: the Headhouse, located west of Canal Street; the east-facing arcade on Canal Street; and the Plaza of Fifth Third Center, along the Chicago River. The nation’s third-busiest rail hub, accommodating more than 120,000 Amtrak and Metra passengers every day, Union Station already recognized the need to invite people to stop and stay in its 2011 Master Plan, as they do in D.C. and Philadelphia. Entries are due July 24 at 5:00 p.m. to activateunionstation.com.