Slab City, California is near the Salton Sea and is full of interesting people who seek the alternative lifestyle. The only problem is it's next to a military bombing range although they don't bomb nearby, they do often have helicopter excersises nearby so it can get noisy sometimes. Also very hot in summer. Other than that, it's worth a visit
Just after Salvation Mountain, this is the first sign that indicates you're getting close to the nether regions