You can download the logo for BAU 2015 here 
Here is a Bau 2015 Logo Overview

Contains a selection of photos from BAU 2013, which you can use to illustrate your reports:

• Launch image database

Note: To download a photo, just click on the diskette symbol above the image. All images are supplied in print quality (300 dpi). Copyright information to be included with all photos used: © Messe München GmbH – BAU 2015.