26th of October: Open door day Old observatory!
At sunday afternoon 26th of October ” de Leidse Sterrewacht” opened it’s doors. This unique building was visited by lots of locals and students!
26th of October: Open door day Old observatory!
At sunday afternoon 26th of October ” de Leidse Sterrewacht” opened it’s doors. This unique building was visited by lots of locals and students!