The Observatory Science Centre is set within the Herstmonceux Castle Estate, home of the Bader International Study Centre, Queen's University (Canada).
Due to COVID-19 and the required NHS Test & Trace system it is not currently possible to purchase Joint Admission tickets for both attractions.
Please refer to Herstmonceux Gardens & Grounds website for their current information.
Admission to The Gardens & Grounds alone is via a separate entry ticket which must be purchased on-line in advance or from the castle entrance kiosk.