On 1 January 1924 the City of Graz and Kienreichs Anzeigen Vermittlungsgesellschaft m.b.H. founded Ankünder Steiermärkische Ankündigungs GesmbH as a company with its registered office in Graz.

At that time, the company’s object was to carry out all forms of advertising, which, in the 1920s, essentially meant advertising with small posters.

The use of large-format posters had begun by the early 1950s, starting in the USA.

Since 1975, buses have been used as an advertising medium in Graz.

On 1 January 1985, Ankünder was taken over by Grazer Stadtwerke AG.

Timeline of a successful expansion strategy:

In 1991 the first foreign subsidiary - Europlakat in Croatia – was founded.

In 1992 Europlakat was established in Slovenia.
 
In 1995 City Light "Ankünder" GmbH was established.

In 1998 the billposting company Werbeunion was acquired.

In 1999 the service company Plakat "Ankünder" GesmbH was founded as a joint venture with Dr. Heinrich Schuster GmbH.

In 2001 video walls were erected in prime locations in Graz.

In 2002 multimedia advertising was introduced in public transport.
 
Since 2004 this system has been in operation as Infoscreen on trams and on the video wall via screens.

In 2005 a comprehensive Poster Light network was established throughout the Graz urban area.

2006 building of additional rotating billboards at very high-traffic sites in the urban area of Graz and the Video Wall on the Jakominiplatz was digitised.

2007 the first Poster Lights were built in styrian metropolitan areas.

2009 realisation of Ambient Media promotion

2010 building of City Pillars in Graz

2011 building of Rolling Boards and introducing of City Bikes in Ljubljana