BU Castle

The Boston University Castle (or BU Castle or simply "The Castle") is a Tudor Revival-style mansion owned by Boston University on Bay State Road. It is frequently used on Shadows as the exterior location for The Agency.

History
See Wikipedia

The Castle in Shadows
The Castle has appeared in Shadows many times since the show's inception. Its evocative stone architecture and vine-covered walls make it an attractive location for supernatural storytelling.

In 2004, The Castle made its debut as the Agency Building in Episode 36, "The Agency". The production team chose it for several reasons. The Castle was conveniently located, evoked mystery, and was also a consistently available location. Although the interior, which houses the BU Pub, is not used for filming, the exterior building, as BU property, could always be counted on for getting footage of actors walking into the door.

The Castle appears in these episodes:
 * "The Agency"
 * "Pest Control"
 * "The Captives"
 * "The Grundel"
 * "Siren's Song"
 * "Liability"
 * "Terminus"
 * "Ohanzee"
 * "Exodus"