She sang a 300-year-old Appalachian song - and it gave everyone chills

What happens when you punch a 15-foot tiger shark in the face

This is what 350 buyers woke up to - 530 castles abandoned, $200 million lost

This is what happens when 50,000 people build a city where humans shouldn’t live

The largest pyramid in the world isn’t in Egypt - and almost nobody knows it exists

160,000 people died on this island - then they tried to hide the rest

160,000 people were sent to this island to die - then the experiments began

How 250 people saw UFOs on the same night in Massachusetts

China built a $1 billion copy of Paris - then 100,000 people suddenly moved in

This village pays you $70,000 to move there - but there's a catch

374,142 bunkers are buried here - then we found the largest one on Earth

15 miles from shore, we couldn't leave the raft - then something moved beneath us

They were cut off from the world for 200 years - only 40 people remain today

374,142 bunkers are buried here - then we found the largest one on Earth

Only 40 people live here - inside the world’s most isolated island

They sealed humans inside a fake Earth for two years - here’s what went wrong

A woman has lived in this abandoned resort for 33 years - waiting for a war to end

This cabin survived 100 years - yet almost no one survived the climb

437 trucks, 40 crew members, 1 cargo ship and no way back