When you see our position and size relative to the universe, you can easily understand why Douglas Adams thought showing people this information would be a good way of executing them. "The Toal Perspective Vortex" showed the condemned their placement and total insignificance relative to the entire universe.
"The Milky Way galaxy is one of a few dozen galaxies known as the Local Group.
Astronomers have discovered that our Local Group is on the outskirts of a giant cluster of several thousand galaxies – which astronomers call the Virgo Cluster."
Another thing worth knowing about is the universe's 'cosmic web' image showing the entirety of the known universe.
long load time for full-size. 800x600 above is sufficient.
"Visualization of the whole observable universe. The scale is such that the fine grains represent collections of large numbers of superclusters. The Virgo Supercluster – home of Milky Way – is marked at the center, but is too small to be seen."