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CONCORD, N.C. -- Flying around a track in a race car at 200-plus mph creates a lot of adrenaline; so much adrenaline that it can sometimes be difficult for drivers to unwind after a race.

So just how does Dale Earnhardt Jr. relax after a hard day's work at the racetrack?

By sitting in a rocker with his feet up on the back deck of his custom-made treehouse, as he showed viewers on Animal Planet's "Treehouse Masters" Friday night.

The treehouse was completed last spring and was constructed with a pine siding. The interior walls are made of barn wood and the rooms are filled with personal mementos of Earnhardt's, including his first television.

"Sitting on that back deck right there is the best place in the world at 7 o'clock on a Sunday afternoon," Earnhardt said. "To me, I don't want to be anywhere else."

Check out the video below for an extended clip of Earnhardt's treehouse tour.