The Antlia Cluster (or Abell S0636) is a cluster of galaxies located in the Hydra-Centaurus Supercluster.

The cluster CL0024+17 is a cluster of galaxies located in Pisces.

These galaxies all lie within the Sculptor Group, a weakly bound, filament-like group of galaxies located near the Local Group.

The M51 Group is a group of galaxies located in Canes Venatici.

M109 is the brightest galaxy in the M109 Group, a large group of galaxies located in the constellation Ursa Major that may contain over 50 galaxies.

NGC 3877 is a member of the M109 Group, a group of galaxies located in the constellation Ursa Major that may contain over 50 galaxies.

The M101 Group is a loose group of galaxies located in Ursa Major.

This structure is not only incredibly large, but also very dense; the galaxies located in each of the filaments are four times closer to each other than the universe's average.

There are many other galaxies located in Hydra.

The NGC 5866 Group is a small group of galaxies located in the constellation Draco.