@rjluna2: I think, it's quite unique, that lighting is involved in touristic items. I was surprised, when I saw today this touristic sign at the Autobahn 44:



I'm sorry for the bad quality -I made the pic while driving- here a found from the WWW: http://www.derpatriot.de/printstory?p_p_id=DetailedStory_WAR_portalsuite&p_p_lif- ecycle=0&_DetailedStory_WAR_portalsuite_arg_detailstory_uuid=98a59fe9-decd-4f20-9f7d-dce43a19b0ba

Translation: "Lippstadt, centrum for automotive electronics and lighting technology"
The reason for that is for once the professorship for automotive electronics at the local university and the biggest industrial company there:
http://www.hella.com/hella-com/index.html?rdeLocale=en


While searching for a pic, I've found something similar for annother town (but not seen in reality, as I didn't drove the Autobahn A46 any more since several years:

http://www.dorfinfo.de/wp-content/uploads/2013/03/Hinweisschild-Arnsberg.jpg

Text: "Arnsberg, centrum for lighting technology"

Beceause there are located several companies, specialized in lighting-electronics, as
- http://www.elpro-leuchten.de/elpro-leuchten-licht-technik-innovation/
- http://www.trilux.com/de/

More companies are listed on the page of "The Lighting Forum": http://www.arnsberg.de/wirtschaft/lichtforum.php (a creation of the town council to bundle the public attention)