While I stick to my sentiments that there is no such thing as a utopia, outside yourself, Bukit Lewang comes close. It's that harmonious, quaint jungle village, which you only hear about in a children's book. (Of course the village isn't perfect, it comes with its own set of unique problems - over commercialization, aggressive locals to name a few.)
The harmony is not in the objects we typically associate with harmony - rainbows, butterflies and people holding hands in a circle - but rather more subtle devices. It lies in the fluid and playful interactions between locals. It lies in the kids swimming in the river, playing without a care or a screen to distract them from their environment. It's in the incessant sharing amongst locals, which isn't a question but an unspoken principal. Indicative of these constructs is the fact that they all look incredibly young. They smile and laugh often, and I haven’t heard the words “worry”, “stress”, or “anxiety”.