Canon 300D handheld cha-cha. Best viewed large size.
This is the entrance to Restormel castle, in Cornwall. A shell keep buiilt in the 12th century, the castle last saw military action in the English Civil War of the 17th century.
To view sit 2-3 feet from your monitor. Slightly cross eyes. The left eye looks at the right image. The right eye looks at the left image. Don't strain or go bug-eyed. Relax. A central image giving stereo depth will appear.