Sterrewacht Leiden – Staircase Sterrewacht Leiden – Library Sterrewacht Leiden – Library Sterrewacht Leiden – Library Sterrewacht Leiden – 24 hours clock Sterrewacht Leiden – Made in Switzerland Sterrewacht Leiden – Opening to the sky Sterrewacht Leiden – Lenses Sterrewacht Leiden – View of the Observatory Sterrewacht Leiden – View of Leiden from one of th… Academiegebouw – Bicycle shed, but now in use as c… Academiegebouw – Corridor Academiegebouw – Corridor Academiegebouw – Lecture room Academiegebouw – Caricature of mr. N.F. Hofstee Academiegebouw – Lecture room Academiegebouw – Chairs Academiegebouw – Gewelfkamer Academiegebouw – Room numbers Academiegebouw – Staircase Academiegebouw – Entrance to the Klein Auditorium Academiegebouw – Staircase Academiegebouw – Drinks Sterrewacht Leiden – View from one of the domes Sterrewacht Leiden – Staircase Sterrewacht Leiden – Wooden telescope Sterrewacht Leiden – Domes Sterrewacht Leiden – Telescope Sterrewacht Leiden – Lecture room Under the arch of the Fish Bridge in Leiden Approaching the Church Bridge in Leiden Approaching the Bostel Brige in Leiden Approaching the Rembrandt Bridge Access cover „W SCH” Vault light of Emile Sanders of Amsterdam Temporary entrance to the Pieter de la Court build… Gradus ad parnassum Nissan X-trial Lagenwaardse Molen Ambonstraat in Leiden New street in Alphen aan den Rijn White house in Alphen aan den Rijn Church building in Alphen aan den Rijn Town hall in Alphen aan den Rijn Lagenwaardse Polder and Vliet Polder