Old Observatory - Leiden

The Old Observatory in Leiden is a special place steeped in history and science. Founded in 1633 and housed in its current building since 1861, it is the oldest university observatory in the world still in existence. Leiden University founded this observatory to offer students of astronomy practical education, which was revolutionary at the time. Over the centuries, famous astronomers such as Willem de Sitter and Jan Hendrik Oort have worked here, making major contributions to our understanding of the universe.

Today, guided tours, exhibitions and events are organised where you can learn all about astronomy, navigation and the rich history of the observatory. The observatory is also still used for modern research initiatives and student activities.

Do you love science, history or are you interested in unusual places? Then a visit to the Old Observatory is definitely worthwhile. Stroll through the beautiful historic domes, admire antique telescopes and experience the magic of the starry sky in a place where discoveries were made that changed the world. The Old Observatory is a unique experience for young and old alike!

You can visit the Observatory as part of your visit to the Hortus Botanicus or during one of the walk-in tours from Wednesday to Sunday.