Ubiquitous computing has a vision of information embedded in the world around us. Yet the built environment, while familiar is also the subject of design. Recently, architects have also seen digital elements incorporated into the fabric of buildings as a way of creating advanced spaces and environments to meet the dynamic challenges of future habitation. Historically, both sides have progressed based on their own practice in largely mutual non awareness.This book, based on a series of workshops held at the prestigious international ACM CHI conference seeks to bring these research communities together. This chapter introduces the ideas, themes and issues approached in the book.