Dotted around Taiwan lie the remains of abandoned bunkers originally built to repel an invasion from China. They date from a period in the island's history when it was under martial law and fear of a Chinese attack was a part of daily life.

The threat from China, which claims democratic Taiwan as its own to be brought under Beijing's rule, by force if needed, has not gone away but the aging bunkers are no longer needed for defense purposes.

Today, some farmers use retired bunkers as storage rooms for tools. Other bunkers have become part of parks; some along the coast are sought-after spots for photo opportunities by Instagrammers seeking "likes" for their sunset views.