We have a smorgasbord of substances, technologies, and practices that can aid in our pursuit to play with our minds. And yet many ignore one of the best playgrounds we have: dreams. Dreaming is the original nonordinary mind state. It's also the one most universally experienced. Most of us visit bizarre, visionary worlds during the one-third of our lives that we spend asleep.

The complex belief system of Australia's aboriginal people is based on the fact that the world was formed in the dreams of the the Creator. Every feature of the earth, they believe, exists in both realms — in a place called "The Dreamtime." Only by looking at the realms together can someone fully understand their ancestry and place in the world. The dream of the creator is an ongoing mythic reality that's overlaid onto features of the earth and points the way to cultural touchpoints and truths embedded in the land. For aborigines, dreams and reality are one.

To dream is to enter into a different world, and there are several different portals that lead to various versions of the terrain. One of the lesser known is liminal dreaming. It exists in a hazy, transitional state that we all experience at some point. Harnessed correctly, it has the potential to yield solutions to complex problems and provide intense kaleidoscopic visions.

Liminal Dreaming is a method of working with hypnagogia and hypnompompia, those floaty and sometimes uncanny trance states we pass through as we fall into sleep at night and climb towards waking in the morning. Such hypnagogic and hypnopompic visions—together called hypnoidal dreams—surf the line of consciousness, and they also emerge during delicious naps and delirious fatigue. My interest in liminal dreaming arises from my own incredible...

Urban Dreamscape: SF is a practice, a meditation on mapping, a psychogeographical research that breaks down divisions between internal and external spaces. It is a means of creating sacred space in the city. Through the practice, I explore the inner psychic spaces of my dream world, superimposing this intimate realm on top of the urban neighborhood in which I live. I developed the Urban Dreamscape during a steamy New York City summer more than a...