Sequoia National Park is famous for--get this--its giant sequoia trees. In fact, it's home to the largest tree in the world, named General Sherman. At 25 feet wide and 275 feet tall, it'll generally make you feel tiny.
In fact, some fall in love with the great outdoors so much that sometimes such a retreat is later extended into a lifestyle. Such is the case for filmmaker Zach Both, who converted an empty cargo van into a one-of-a-kind camping van/work studio.