Washington, United States of America
Light sculpture at the National Gallery in Washington
A security guard stands by the entrance to the light sculpture called "Multiverse", a tunnel of lights that links the East and West Buildings of the National Gallery in Washington, May 5, 2015. The work features approximately 41,000 computer-programmed LED nodes that run through channels along the entire 200-foot-long space.
REUTERS/Kevin Lamarque TPX IMAGES OF THE DAY