What structure contains the Great Attractor, which serves as the ultimate destination for the gravitational flow defining Laniakea?

A larger structure called the Shapley Supercluster

The dynamics governing the Laniakea Supercluster revolve around a massive center of gravity known as the Great Attractor, toward which all constituent galaxies flow. While the Great Attractor acts as the focal point organizing Laniakea, it is not itself the largest known grouping in this local cosmic volume. Instead, the Great Attractor is situated within an even more massive structure termed the Shapley Supercluster. This places the Laniakea Supercluster, the Virgo Supercluster, and the Local Group into a still broader cosmic context, indicating continuous nested hierarchies governed by gravity across unimaginable distances.