Iona is an island in the Inner Hebrides, off the Ross of Mull on the western coast of Scotland. It is mainly known for Iona Abbey, though there are other buildings on the island. From Wikipedia
The royal couple celebrated their 14th wedding anniversary with engagements on Mull and Iona, emphasizing rural support, environmental conservation, and mental well-being, capped by a chance meeting with Ruby Wax.
