Common Boston, a volunteer committee of the Boston Society of Architects, has teamed up with us at MIT’s Center for Future Civic Media and our LostInBoston project on “Common Boston Common Build,” a three-day competition challenging participants to design and implement a project in response to real community needs.

The competition is going on now through Friday, with installations around the Federal Reserve Bank of Boston at 600 Atlantic Avenue, Boston, adjacent to South Station.

This year’s challenge is geared toward making Boston’s communities more pedestrian-friendly, responding to the theme, “Where We Connect.” Participants will design and construct wayfinding elements that should be integrated into their site with an emphasis on the location’s unique context.

To vote on this year’s installations and for more information, visit http://cbcb.commonboston.org.