Answer:
It's been around for millions of years, but is never more than a month old. What is it?
Thousands lay up gold within this house, But no man made it. Spears past counting guard this house, But no man wards it.
Break it and it is better, immediately set and harder to break again
What turns everything around but does not move?
When it comes in, From sea to shore, Twenty paces you'll see, No less, no more.
Said to have fifty shades