Christina is an East Berliner who was born in the GDR, a socialist republic that no longer exists. She danced on the Wall in 1989, and closely observed the restructuring of Germany and the frantic urban transformation of Berlin. At the European University Viadrina in Frankfurt (Oder) she earned an MA in cultural history and comparative social sciences, particularly the ideology-based history of the twentieth century. Her dissertation was on a more contemporary subject of "The Economic Impact of the Contemporary Art Scene on the city of Berlin." She now works as an arts administrator, manages urban development initiatives, and since 2006 routinely walks guests through the eclectic and varied political, cultural, and architectural histories of the German capital and beyond.

After completing studies in archaeology at Bournemouth University, England, in 2004, Aaron has worked as an archaeologist in the Isle of Man, the Channel Islands, London, and all over southern England. Holding the position of Senior Archaeologist at the Museum of London Archaeology Service from 2006–2012, he supervised numerous site excavations dating from the Neolithic period (5000BC) through to the Second World War. Since arriving in Germany, he has continued his archaeological career through excavations in Bavaria, Brandenburg, and Berlin, Mitte. Aaron was more recently involved in an excavation in Klosterstrasse which was determined to be the oldest medieval remains in the city, and he holds the distinction of finding the “oldest medieval pig in Berlin" at this site. It could be said that he operates at the ‘coal face,' helping to rewrite and refine the known histories of places through his archaeological work. Aaron also has had a lifelong passion for military history, particularly that of the Second World War, and finds Berlin an ideal landscape for digging into that history.

Sven was born in Germany and grew up in Spain, where he attended the German School. After receiving his MA in industrial design he returned to Germany, working for several design and architecture studios, including the renowned post disciplinary studio El Último Grito, and established himself as a freelancer. In 2011, he began to lead guided tours in Berlin and its surroundings, which has inspired him to further his education in philosophy and history at the University of Potsdam.