Look up - what do you see? Just the sky? There is so much more - we take you on a journey with the very first travel guide through the airspace, the Sky Guide. What discoveries and phenomena await us on a journey to lofty heights? Who actually owns the airspace? How can we best prepare for a trip to the skies? And who makes sure that the airspace remains safe and clean? For centuries, people have been travelling through airspace - first in their thoughts and dreams, then with ever more sophisticated flying machines and aircraft. In the process, questions increasingly arose about orientation and safety when travelling in three-dimensional space and systems for air traffic control were established worldwide. On the occasion of the 100th anniversary of air traffic control the air navigation service provider Skyguide, together with the publishing house vatter&vatter, is publishing this first travel guide to airspace: the Sky Guide. The Sky Guide looks back into the past and takes you on the first flights and takes you along on the first flight tests. It sheds light on the future of efficient and ecological aviation and presents unique tips for excursions and insider pearls from the world of aviation. A real travel guide, that is.