Leiden Observatory (1633) is the world’s oldest still active university observatory institute. Its 1860 building was modeled after a Russian observatory and has been visited by Leiden professor Albert Einstein. It still houses four working antique telescopes, including a wooden specimen from 1838.February 2, 2026
A slap in the face of those who completely despise the strength and importance of the said “coincidences”. This is almost unbelievable. by justl00kin9
