This document discusses how technology could support existing religious and spiritual practices or create new ones. It explores how the spiritual layer of a city, including things like spirit houses, shrines, offerings, and sacred routes, might evolve and interact with technology. Some questions are raised about how tagging sacred spaces could change how people experience and navigate a city, as well as how urban architecture could impact spirit house design and what smart spirit houses of the future may look like and their effect on the city.