College of English Language (CEL), US. Christopher has joined his brother and business partner Patrick Himmelberg becoming the CEL marketing director, with schools in San Diego Downtown, Pacific Beach and Santa Monica. The two entered the education industry in 2000 by setting up their first successful Spanish school in Ecuador (Academic Columbus) and continued growing their family business in 2004 by founding Kolumbus Sprachreisen agency in Germany. In the following years, they set up more schools in Costa Rica and Mexico, as well as agencies in Europe. Christopher has also been the president of the German Agency Association, FDSV, from 2011 to 2013.