North Korea has been known for its mysteries since the time it was established and one of the biggest mysteries that has continued to grab the headlines all these years are the mysterious trains ...

An curved arrow pointing right. Deep below the ground is North Korea's beautiful Pyongyang Metro, a bustling subway system where hundreds of thousands of people make their way to and from work ...

For the first time in more than a decade, a train has travelled from South Korea across the heavily guarded border into North Korea. On board is a team of South Korean experts investigating ways ...