Dezeen is giving away five copies of a map that pinpoints Chicago's concrete buildings, including iconic brutalist structures and university projects, in this competition.

Concrete Chicago Map is a double-sided guide that details of over 50 concrete buildings and structures in the city's Downtown and surrounding areas.
The foldout design has a map on one side marking the locations of the key building, which are then depicted in a series of black-and-white photographs on the reverse. Accompanying information includes the project architect and the date each was built.
Completed in 1964, Chicago-based architect Bertrand Goldberg constructed Marina City along the Chicago River
Chicago-based architect Iker Gil of Mas Studio edited the guide, and provided an introduction, with photography by Jason Woods.
Among the projects included are the cylindrical towers of Marina City with scalloped terraces, completed by local architect Bertrand Goldberg, and the brutalist main library at Northwestern University by Skidmore, Owings & Merrill (SOM).
US firm Perkins+Will designed St Mary of Nazareth Hospital in the city's Ukranian Village
Other buildings on the map by SOM include the cube-like structures that form the Behavioral Science Building at the University of Illinois Chicago, and the University of Chicago's brutalist Joseph Regenstein Library, where the reading room was recently updated by Tinucci Architects.
Northwestern University's main library opened in 1970, built by Skidm...