The trend towards environmental awareness is decisively influencing the way we live our lives. As Passive Houses have been conceptualized and became part of our collective consciousness, architecture stands at the forefront of an emerging modern eco-friendly lifestyle. Taken back to basics, passive house architecture satisfies the desire to reduce the use of external primary energy. Depending on the climatic conditions, the utilization of different technologies, methods, and interventions is required, presenting a variety of challenges to the architects. This monograph portrays about 60 single family homes from across the world that showcase the great variety of exciting and at the same time sustainable architectural solutions.