Bäckerbreitergang 75
20355 Hamburg 

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Gallery Manager 


Lavinia Rosen graduated in 2015 with an MA in Art Business and Contemporary Art form the Sotheby’s Institute of Art in New York and London. Since then she works as curator and art advisor in multiple disciplines of the art scene in Hamburg. She has founded her own Pop-Up-Gallery „Kunstvoll Galerie“ in 2015 in Hamburg, and has been exhibiting at different temporary locations since.

In October 2016, Lavinia was invited to curate her first exhibition "Traces Of Minimalism" at the heliumcowboy gallery, and supported the following exhibitions in PR, exhibition organisation and artist liaison. In December 2016 she took over as our Gallery Manager, the most important role at heliumcowboy.

Contact: rosen[at]heliumcowboy.com


Founder & Proprietor


The man who started it all - though today he spends most of his time creating his complex woodwork or rare and intricate drawings and is only excecuting a representational and consulting role within the heliumcowboy organization: Jörg Heikhaus.

Born in Cologne, Jörg‘s career has taken a rather irregular and unusual path, being (in chronological order but without claim to be complete) an artist, a photographer, a designer, a newspaper editor, writer of short stories and fiction, founder and creative director of the design agency killakanu, CEO of Internet consultancy Icon Medialab Germany and a freelance business consultant for companies such as Brand Eins, Volkswagen or Universal Music. 

Professionally engaged in the digital economy since late 1995, Jörg is not only respected as one of the online pioneers in Germany, but has also been an entrepreneur since the very early days of his career, with over half a dozen companies he founded, co-founded and/or started-up from scratch. He already launched his first business venture when he was still a teenager at school, dealing with art and design.

Since art was the first true love in his life, opening the art gallery heliumcowboy in 2003 marked the consolidation of his experience, curiosity and passion. Based upon his diverse professional from painting walls at night to being the CEO of a large international, listed company, Jörg developed heliumcowboy like a state of the art start-up venture, and began to support young artists with the ability to blow away boundaries and establish the future aesthetics of art.

With Urban Art and the accompanying vision and attitude rooted deeply in the philosophy of heliumcowboy, Jörg quickly expanded the gallery’s reach by showcasing artists from around the globe, organizing exhibitions abroad, and taking part in acclaimed art fairs in New York, Miami or Basel. 

Since 2004, Jörg is running his own art under the name of 'Alex Diamond', and over the past years this has become his main venture outside of heliumcowboy. More info can be found here or on his artist website alexdiamond.net.

Jörg is also a an author for the Hamburg-blog of Germany's biggest weekly newspaper DIE ZEIT. He writes mostly about art, obviously.




We work together with a team of curators, art handlers, expert partners from various fields of expertise and a hands-on crew to create unique art experiences. If you think you can add to our portfolio of skill and excellence, please drop us a mail with your resumé at hello@heliumcowboy.com.