The first OEB was hosted at the Berlin Congress Center (bcc); it then moved to the Hotel InterContinental Berlin in 1996 where it has taken place for subsequent years, apart from 2020, when it was organised as a virtual event.
The inaugural OEB was initially held at the Berlin Congress Center (bcc); it subsequently relocated to the Hotel InterContinental Berlin in 1996, where it has taken place annually since then, with the exception of 2020, when it was conducted as a virtual event.