NYU Langone Medical Center's emergency department is open for the first time since Hurricane Sandy.
The 22,000 square foot facility is located on First Avenue near 33rd Street in Kips Bay.
It's more than triple the size of the old ER.
It features a designated area for pediatric emergency patients, more treatment rooms and a separate entrance for adult walk-in and ambulance patients.
The hospital's Emergency Department was severely damaged when the basement and first floor flooded during the storm.
Governor Andrew Cuomo and Mayor Bill de Blasio both said they see the re-opening as an example of New York's resilience.
"It took sacrifice, it took generosity, it took vision, but this is another one of those moments when we can say to the world, this is what we're made of," De Blasio said.
"New Yorkers have a history of experiencing tragedy, refusing to be defeated, re-engineering and re-emerging better than before," Cuomo said.
Nearly $150 million in FEMA aid was allocated for repairs.
The hospital also received a $50 million donation.