The Arrow pilot will be shooting two days at Hatley Castle.

As if a home base at the familiar Smallville studio wasn’t enough, the new Oliver Queen will be shooting at another Smallville stomping ground – Hatley Castle, better known to fans of the Superman series as “Luthor Mansion.”

Canada.com reports that Arrow will be shooting at the castle within Royal Roads University for two days of filming. We’re not sure if the filming will take place on the interiors, or on the grounds — so who knows if the familiar outdoor visage of the mansion will be seen. (Green Arrow and Lex Luthor aren’t the only comic book characters who hang out there — the castle was also used for Xavier’s mansion in the X-Men films). We also can’t tell you what the mansion will be used for, because we actually don’t know — if anyone has tips, please e-mail us.