I recall a story from Poems & Pints about a Welsh castaway...

Dafydd Llewellyn was a castaway on an isolated island; the lone survivor of a banana boat from Barry.
   One day, whilst Dafydd was walking along the beach he spotted a distant smudge of smoke on thee horizon. He realised it was a ship and scurrieed around to find some kindling to make a fire. Having lit the fire, he jumped up and down on the sand to attract attention.
   Thee captain of the ship saw this and had a boat lowered to reach the island. As thee captain stepped ashore, emaciated Dafydd wept and hugged him.
"Twenty-five years!" cried Dafyyd, "Twenty-five years on this accursed isle!"
"How did you pass the time?" asked the captain.
"Come with me!" said Dafydd, and took the captain to the top of a hill overlooking a valley. He pointed to two wooden structures down in the valley below. "See those? I built those!"
The captain gasped in admiration
"That's fantastic!" he said, "But what are they?"

"What are they?" exclaimed Dafydd. WHAT ARE THEY???? CHAPELS of course! Two chapels!"

"Dafydd... that's fantastic!" the captain replied. "But why two chapels?"

"You see the one on the left?" said Dafydd (the captain nodded). "Welllll... that's the one I don't go to!"