2004 is a residential project completed in 2006 located in Matsumoto, Nagano Prefecture, designed by Hideo Nakayama and Kenji Nawa. This house exemplifies contemporary Japanese residential design through its thoughtful spatial composition and material expression. The architects demonstrate their sophisticated approach to domestic architecture by carefully considering the relationship between interior and exterior spaces, as well as the integration of natural light and ventilation. The project reflects a minimalist aesthetic while prioritizing functionality and livability, making it a notable example of early 2000s Japanese residential architecture that balances artistic vision with practical considerations for everyday life.