Okunoshima island was the site of Japan's secret chemical-weapons production factory during World War II.
During the war, the island factory produced more than 6 kilotons of poison gases which were tested on rabbits.
Today, the island has been reborn as a tourist attraction and is called "Us agi Jima" or "Rabbit Island," thanks to its population of wild rabbits.
In 2013, Stephanie Broekarts, a 25-year-old environmental-social sciences student at Kyoto University traveled to "Rabbit Island."
"I was couch surfing with a local girl and she showed me pictures of her visit to Okunoshima and I was instantly sold. I've always been a big animal fan, bunnies in particular, so something nicknamed 'the bunny island' was something I couldn't skip," Broekarts wrote.
Below are some pictures Broekarts shared with us from her trip to Rabbit Island.