Redwood Forest, California I've been there, me my mom and my dad entered a hollow tree and there was room inside of that tree for 10 more people. I measured how many steps it took to get around a tree an it took 32 steps. The place is just beautiful.
This is the area of northern California where the giant Redwoods are located, which is about 150 miles north of San Francisco (drive straight up Hwy. Don't go to Muir Woods National Park instead go to Avenue Of The Giants.