"Spirit Within" is one of the current round of sim-sized art installations at the Linden Endowment for the Arts (LEA) that is now open. Lagu Indigo & Stardove Spirt, the two artists who have created the installation, describe it as "a project about life and death experience". You can find their complete description over the the LEA Web Site.
The exhibit itself consists of organic shapes and blue and green butterflies that cluster around a tall light shaft that itself emerges from a moth-like creature. Steps lead up to the central "temple", you can fly around and look at the exhibit from all directions -- the photograph below was taken at the top of the light tower looking down to earth. Try to set your distance out to at least 256 meters to see all angles of the installation.
I found the exhibit both beautiful and a little bit threatening, which is probably the emotions that the artists wanted to convey. It is highly recommended for a visit. You can also check out surrouning LEA sims and take in some of the best conceptual art virtual reality has to offer.
To find out more about the exhibit and the Linden Endowment for the Arts: