From Wikipedia:

The first edition appeared in Germany in 1976. Since then, the magazine has been published in Bulgaria, Croatia, Czech Republic, Estonia, Finland, France (first international edition), Greece, Hungary, India (publication ceased in 2013), Italy, Japan, Korea, Lithuania, Latvia, Romania, Russia (publication ceased in 2018), Slovakia, Slovenia, Spain, and Turkey. The current circulation figure in France and Germany is over 500,000.

GEO is published by Gruner + Jahr, a publishing house owned by Bertelsmann.