21Celsius Ventures

C Wire leads advertising innovation, embraced by 30+ media agencies for impactful campaigns with brands like Mercedes, Miele or Decathlon. We collaborate with 300+ top publisher websites such as Spiegel.de in Germany, France, Italy, Switzerland, Austria and Serbia. In response to mounting privacy concerns, our AI-powered platform uses alternative data for contextually relevant ads. With a dedicated team of 18 professionals across three countries, we target entry into the US market in 2025.

POP UP SHOPS is an online marketplace for short-term retail space and connects landlords with innovative brands, companies, designers and artists looking for space to sell. From a booth at a street fair, to a shop-in-shop inside a chique boutique, to a entire flagship store on a busy shopping street – we optimize the rental process. Discover Pop Up Shops in your city and around the world. Launch your idea within days, test your products in multiple cities within a short time. POP UP SHOPS makes it possible. We make retail space more accessible and foster local economies by empowering new, emerging and established companies.

POP UP SHOPS is an online marketplace for short-term retail space and connects landlords with innovative brands, companies, designers and artists looking for space to sell. From a booth at a street fair, to a shop-in-shop inside a chique boutique, to a entire flagship store on a busy shopping street – we optimize the rental process. Discover Pop Up Shops in your city and around the world. Launch your idea within days, test your products in multiple cities within a short time. POP UP SHOPS makes it possible. We make retail space more accessible and foster local economies by empowering new, emerging and established companies.