Fireflies on the Water (2002), by Yayoi Kusama.
Fireflies on the Water is an installation made of 150 lights, mirrors and water. It offers an out-of-this-world experience from the confines of a modest room paneled with mirrors and adorned with 150 tiny beads of light deliberately suspended throughout the compact space. Upon entering the room, there’s an illusionary effect that gives the impression of infinite space reflected on all sides and in the two inches of water that flows below.
I need to experience this immediately.