Cartlstadt is a bourough of Düsseldorf

Düsseldorf

Düsseldorf is the capital city of the German state of North Rhine-Westphalia and centre of the Rhine-Ruhr metropolitan region.Düsseldorf is an important international business and financial centre and renowned for its fashion and trade fairs. Located centrally within the European Megalopolis, the...

 and belongs to the central District 1

District 1, Düsseldorf

District 1 is the central city district of Düsseldorf, the state capital of North Rhine-Westphalia, Germany and the city's commercial and cultural center...

. It is in the south of the Old Town (Altstadt

Düsseldorf-Altstadt

The Altstadt is one of the 49 boroughs of Düsseldorf, Germany; it belongs to central City District 1. The Düsseldorfer Altstadt is known as "the longest bar in the world" , because the small Old Town has more than 300 bars and discothèques.Famous is the special beer from Düsseldorf, the Altbier ,...

) and named after the Duke Carl-Theodor

Charles Theodore, Elector of Bavaria

Charles Theodore, Prince-Elector, Count Palatine and Duke of Bavaria reigned as Prince-Elector and Count palatine from 1742, as Duke of Jülich and Berg from 1742 and also as Prince-Elector and Duke of Bavaria from 1777, until his death...

, who founded this borough.

Carlstadt has an area of 0.46 km². It is the smallest borough of Düsseldorf.
Its economical life is mainly based on upper class shops.
One of the three European central offices of Vodafone

Vodafone

Vodafone Group Plc is a global telecommunications company headquartered in London, United Kingdom. It is the world's largest mobile telecommunications company measured by revenues and the world's second-largest measured by subscribers , with around 341 million proportionate subscribers as of...

 is in Carlstadt.

The Heinrich Heine Institute and the Robert Schumann Society are in Carlstadt.
Clara

Clara Schumann

Clara Schumann was a German musician and composer, considered one of the most distinguished pianists of the Romantic era...

 and Robert Schumann

Robert Schumann

Robert Schumann, sometimes known as Robert Alexander Schumann, was a German composer, aesthete and influential music critic. He is regarded as one of the greatest and most representative composers of the Romantic era....

 lived for a couple of years in Carlstadt.

Well-known is the Carlsplatz, the central market place of Düsseldorf in Carlstadt.
This article is based on a translation from the German Wikipedia.