6. Breitenbush Hot Springs
Ready to strip down and take a dip? This clothing-optional hot springs retreat in Oregon is set on 154 acres and is surrounded by the Willamette National Forest. Walk through the meditative labyrinth or choose from programs including yoga, dance, singing and meditation.

And be prepared to go entirely off the grid. All the electricity and heat on the property come from hydropower and geothermal energy, and there’s no internet, cell service or TV.