The Pergamon Altar is a monumental construction built in the first half of the 2nd century BC. The altar is today the most famous item in the Berlin Collection of Classical Antiquities. Currently the Pergamon exhibit is closed for renovation and will re-open again in the 2020s. But this is no reason to be sad, as the Pergamon Altar was 3D digitized and can be admired from all angles, all the time, online.