The lighthouse shown near the start, and titled "West Soay, Scotland" is actually South Stack lighthouse on the Isle of Anglesey, North Wales. It is an Isle of Man/Welsh production after all. Although the footbridge is now closed to the public, you can still walk down (and back up) the 365 stone steps that zig-zag up the cliff face.
Pheobe Tonkin and Tracy Ifeachor were also in The Originals together.
Ed and Jeremy both played love interests of Leighton Meester. Ed on Gossip Girl and Jeremy on CSI Miami.