I took a walk in the woods and came out taller than the trees.
— Henry Thoreau

Woods, lakes and rivers are the surroundings we grew up with. Pitching a tent, roasting marshmallows and star-gazing. 

For most of the US, the woods are easiest to explore. There isn't a state or region without trees and some sort of water, so even if you don't own a tent, you can still enjoy the peacefulness of the woods.