When was the last time you thought about treehouses? Was it during a dream of your long-lost youth, filled with visions and thoughts of carefree days?

You don’t have to reminisce any longer, because treehouses are back. Whether they are the manifestation of our innate desire for freedom, an attempt to relive those untroubled days of our yesteryears, or an attempt to create the perfect play space for our children, treehouses are sprouting up all over the country.

From Washington and Oregon to Tennessee and New York, the number of treehouses being built is growing. From what I’ve read about them recently, they’re not the simple treehouses of our youth either: Some of these newfangled treehouses have electricity and plumbing in them.