Fountains Abbey, in North Yorkshire, England, was founded by Cistercian monks by the River Skell in 1132 and is the largest monastic ruin in Britain. The stone used for construction was quarried locally. The variety of arches, windows, and doors, plus the majesty of the stone construction still standing, lend a surreal quality to the following photos.
Links to more information about Fountains Abbey:
History and an extensive photo gallery