Description from Neatorama: It looks like a portal to another dimension, or maybe a time-travel machine. Multiverse is an art installation in a 200-foot-long tunnel between buildings in the National Gallery of Art in Washington D.C. Designed by artist Leo Villareal, it features around 41,000 LED nodes. I see there’s a moving sidewalk in the tunnel. I’m afraid if I were so lucky as to see this in person, I might never make it to the next building!