Blackness Castle

Two images, taken during January 2014, were stitched together to create this photo of Blackness Castle.
The technical information is as follows.
Camera - Canon EOS 5D Mk II
Shutter speed - 1/25
Aperture - f11.0
Lens - Canon TS-E 24mm f3.5 L
Focal Length - 24mm
ISO - 100
Filter - Hoya 77mm Pro1 DMC Circular Polariser
Tripod