The Empire State Building went dark on Saturday to observe Earth Hour

The Empire State Building's iconic tower lights went dark Saturday night in observance of Earth Hour. The iconic building's lights went off Saturday night for the first time in New York City. Earth Hour was observed at 9 p.m. ET on Saturday. The building's iconic towers were lit up in the dark for Earth Hour on Saturday night.

The Empire State Building briefly went dark Saturday night to observe Earth Hour. The building went dark for the first time since Earth Hour was observed at 11 a.m. Saturday. The Empire States Building was the first to go dark for Earth Hour in New York City, New Jersey.