TAS is a multifunctional architectural landmark completed in 1987 in Nagai, Yamagata Prefecture. Designed by the Regional Environmental Planning Research Laboratory of Homma Toshio Architects, this innovative building seamlessly integrates diverse functions including accommodation, office space, theater, and commercial facilities. TAS exemplifies the practical approach to mixed-use development popular in late 1980s Japan, creating a vibrant community hub. Its thoughtful design demonstrates how contemporary architecture can address multiple urban needs within a single cohesive structure, making it a notable example of functional modernism in regional Japanese cities.