Fountains Abbey is the ruin of the largest Cistercian Abbey in Europe; as you come down from the path, the large arched west window at the end of the ruined nave greets you, looking down on a manicured lawn (the black dots on the lawn are floodlights)
Within the abbey church, the heavy, solid Norman arches run in two colonnades along the central nave; it is no challenge to imaging how majestic the building looked in its original condition.
The 800 acre park has some wonderful water features, including a literal sea of water lilies.
Digital infrared original
On the walk back through Studley Royal, I made the above photo of a greek temple folly, almost lost in the sea of trees.