In late October 1996, Yuko Nii founded the non-profit Williamsburg Art & Historical Center based upon her Bridge Concept. That concept envisions a multifaceted, multicultural art center whose mission is to coalesce the diverse artistic community, and create a bridge between local, national and international artists, emerging and established artists, and artists of all disciplines. Thus through the international language of art, we come to understand each other to create a more peaceful and integrated world. The WAH Center is a force for peace and understanding, and its concept is incorporated in its acronym: "WAH" in Japanese means peace, harmony, or unity.
Yuko also wanted to preserve the WAH Center's landmark building, a French Second Empire masterpiece, making it a functional part of the cultural community of Williamsburg, Brooklyn, New York.