444th dIes natalis of Leiden University 444th dIes natalis of Leiden University 444th dIes natalis of Leiden University 444th dIes natalis of Leiden University 444th dIes natalis of Leiden University Demolition of the old Gorlæus building Demolition of the old Gorlæus building Demolition of the old Gorlæus building Demolition of the old Gorlæus building Demolition of the old Gorlæus building Demolition of the old Gorlæus building New Gorlæus building Demolition of the old Gorlæus Laboratory Demolition of the old Gorlæus Laboratory Old staircase at the Gorlæus building Ventilation on or off Chalk Leidens Ontzet 2019 – Parade – Students Leidens Ontzet 2019 – Parade – University Leidens Ontzet 2019 – Parade – Beadle of the unive… Debate about the debate on islam Demolition of the old Gorlaeus Lab Demolition of the old Gorlaeus Lab View of the former Gorlaeus Lab from the Huygens L… View of the former Gorlaeus Lab from the Huygens L… Lipsius building Academiegebouw Lipsius building Demolition of the old university labs Demolition of the old university labs Demolition of the old university labs Hortus Botanicus 2020 – Grappling plant Hortus Botanicus 2020 – Ants feeding Hortus Botanicus 2020 – Banana plant Hortus Botanicus 2020 – Flower Hortus Botanicus 2020 – Hanging gardens of Leiden Hortus Botanicus 2020 – Leaves Hortus Botanicus 2020 – PTT Hortus Botanicus 2020 – Old postbox Hortus Botanicus 2020 – Japanese garden Hortus Botanicus 2020 – Cactus Hortus Botanicus 2020 – Kidney-leaf mud plantain Hortus Botanicus 2020 – Butterfly Hortus Botanicus 2020 – Swiss Cheese Plant Hortus Botanicus 2020 – Victoria amazonica Hortus Botanicus 2020 – Butterfly Hortus Botanicus 2020 – Victoria amazonica Hortus Botanicus 2020 – Flower Hortus Botanicus 2020 – Leaves Minerva with corona hair University Library Research buildings Hortus Botanicus Silly memorial plaque Waiting to photograph the West-Java Amorphophallus The West-Java Amorphophallus in the Hortus Botanic… Photographing the West-Java Amorphophallus Rijwielbewaarplaats Hortus Botanicus 2022 – Nepenthes Hortus Botanicus 2022 – Amorphophallus titanum Hortus Botanicus 2022 – Nepenthes Hortus Botanicus 2022 – Amorphophallus titanum Hortus Botanicus 2022 – Amorphophallus titanum 444th dIes natalis of Leiden University 444th dIes natalis of Leiden University 444th dIes natalis of Leiden University 444th dIes natalis of Leiden University 444th dIes natalis of Leiden University 444th dIes natalis of Leiden University Leiden University – Exhibition about prof. Cleveri… Leiden University – Exhibition about prof. Cleveri… Leiden University – Exhibition about prof. Cleveri… Tables and chairs Rijksmuseum Boerhaave 2018 – Herman Boerhaave spea… Houd uw fatsoen, aub geen peuken in het plantsoen Staircase in the P.J. Veth building of Leiden Univ… Green wall Couch Gorlaeus building of the Faculty of Science Gorlaeus building of the Faculty of Science ELCID-week ELCID-week ELCID-week Door of the Academy Building Hortus Botanicus 2018 – Beehives Hortus Botanicus 2018 – Dasylirion glaucophyllum Hortus Botanicus 2018 – Original garden Hortus Botanicus 2018 – Flowers Hortus Botanicus 2018 – Flower Hortus Botanicus 2018 – Leavy gent Hortus Botanicus 2018 – Fern Hortus Botanicus 2018 – Fern Hortus Botanicus 2018 – View Hortus Botanicus 2018 – Petals up Hortus Botanicus 2018 – Petals down Hortus Botanicus 2018 – Wasp Hortus Botanicus 2018 – Canary Island date palm Hortus Botanicus 2018 – Flowers Hortus Botanicus 2018 – 1740 Date-plum Hortus Botanicus 2018 – African Lily Hortus Botanicus 2018 – Cat Hortus Botanicus 2018 – Plant Hortus Botanicus 2018 – Greenhouse Hortus Botanicus 2018 – Palm Hortus Botanicus 2018 – Pepper Hortus Botanicus 2018 – Agaves americana in bloom Hortus Botanicus 2018 – Flowers of the Agave ameri… Hortus Botanicus 2018 – Agave americana in bloom Hortus Botanicus 2018 – Flowers of the Agave ameri… Hortus Botanicus 2018 – Flower Hortus Botanicus 2018 – Citron Hortus Botanicus 2018 – Ourflowered Hortus Botanicus 2018 – Unkept tree Hortus Botanicus 2018 – Swan Hortus Botanicus 2018 – Palm Hortus Botanicus 2018 – Agave americana in bloom Hortus Botanicus 2018 Oort building of Leiden University Rowing boat Letter by Princess Beatrix Leiden University Library Fire engine Old Gorlæus Lab of Leiden University Old Gorlæus Lab of Leiden University Nacht van kunst en kennis 2017 – Birds