The empty dome for the Newton Telescope remains on this site and is a landmark, visible from afar. University Study Centre In 1992 Alfred Bader, an alumnus of Queen's University, Ontario, learned of the castle's vacancy and offered to purchase the castle for his wife; she declined, joking that there would be "too many rooms to clean". But in 1994, after intensive renovations, the Queen's International Study Centre was opened. It hosts primarily undergraduate students studying arts, science, or commerce through the Canadian University Study Abroad Program (CUSAP), as well as graduate students studying Public International Law or International Business Law. Specialty summer programmes (May–June) including engineering (Global Project Management), archeology, international health sciences, and law have become popular in recent years with students from both Queen's and other universities. In late January 2009, the ISC was renamed the Bader International Study Centre. As part of the 25th anniversary celebrations, new science and innovation labs were opened on the campus to increase the ability for first year science-tracked students to attend. In 2022, the Bader International Study Centre was renamed Bader College. Historical retinue and events Herstmonceux Castle is associated with a retinue of historical re-enactment troops including archers, knights, and falconers, who fly their birds over the grounds. The castle is host to a large medieval weekend in August of each year, and is also hired out for weddings and weekend events. Appearances in fiction The castle was used for filming part of The Silver Chair, a 1990 BBC adaptation of the book (one of The Chronicles of Narnia) by C. S. Lewis. The castle and gardens were used by comedians Reeves and Mortimer for one of their Mulligan and O'Hare sketches. In August 2002, The Coca-Cola Company rented the castle for use as part of a prize in a Harry Potter-themed sweepstakes—the castle served as "Hogwarts" in a day of Harry Potter-related activities for the sweepstakes winners. A "painting" of the castle was used as a magical cursed object in the U.S. television show Charmed – episode 2.3 "The Painted World". Owners of Herstmonceux Manor/Castle Owners have been as follows: 1066 – Edmer, a priest 1086 – Wilbert, tenant-in-chief c.1200 – Idonea de Herst (married Ingelram de Monceux) 1211 – Her son Waleran de Monceux 1216 – His son William de Monceux ? – His son Waleran de Monceux 1279 – His son John de Monceux 1302 –