#EinsteinTower & #GreatRefractor invite you to "„Tag des offenen Denkmals“ 🌟 On September 8, 2024, the #AIP opens its doors at #Telegrafenberg. 🏞️ Highlights include the 100th anniversary of the Einstein Tower 🔭 and 125 years of the Great Refractor.
https://www.aip.de/de/news/einsteintower-greatrefractor-tagdesoffenendenkmals/