I discovered my dream job the other day while watching the Turner South network. They had a little segment about Jekyll Island off the coast of Georgia (USA), in which they showed people giving guided kayak tours in the Tidlelands Nature Center.

If I was about thirty years younger and good enough at math to pass the biology courses, this would be my dream job for sure.

In the US you will probably need at least a bachelors degree in some kind of biology, history (for historical parks), park management, forestry, or law enforcement in order to become a park ranger.