Archenhold Sternwarte

Lonely Planet review

Germany’s oldest astronomical observatory, in the southeastern corner of Treptower Park, is the place where, in 1915, Albert Einstein gave his first speech in Berlin about his theory of relativity. The observatory’s other major claim to fame is its 21m-long refracting telescope , the longest in the world, built in 1896 by astronomer Friedrich Simon Archenhold. Exhibits in the foyer are a bit ho-hum but still impart fascinating nuggets about the planetary system, astronomy in general and the history of the observatory. Kids love having their picture taken next to the big meteorite chunk.