Weltstadthaus, Modern department store building in Kärntnerstraße, Vienna, Austria.

The Weltstadthaus is a modern department store building on Kärntnerstraße in Vienna housing Peek & Cloppenburg retail operations. It features multiple floors with glass facades and stone elements that create a contemporary shopping environment in the city center.

The Weltstadthaus opened on 1 September 2011 at Kärntner Straße 29–33, built as a Peek & Cloppenburg branch and designed by David Chipperfield. It is the eleventh building the group named "Weltstadthaus", a name also carried by the former Herzmansky department store on Mariahilfer Straße.

The name continues a chain: this is the eleventh building the Peek & Cloppenburg group has called Weltstadthaus, a label also borne by the former Herzmansky department store on Mariahilfer Straße. The light Donaukalk facade is meant to echo local building tradition, such as the tone of the Leopold Museum.

The building sits directly on Kärntnerstraße with straightforward street access and good public transportation connections nearby. Visitors can easily explore multiple retail floors within the structure.

The Weltstadthaus is the eleventh building in the group that the Peek & Cloppenburg group has named "Weltstadthaus", a name also carried by the former Herzmansky department store on Mariahilfer Straße. Its 85 large windows continue up through the upper floors rather than stopping at ground level, which led the architect to call it a "house of windows".