Yes, the tree used for the Rockefeller Center Christmas tree in New York City is a real tree. The tree is typically a Norway Spruce and is harvested from a location in a nearby region, such as New Jersey or Pennsylvania. It is then transported to Rockefeller Center, where it is carefully decorated and illuminated for the holiday season. The tree is typically over 60 feet tall and can have up to 50,000 lights and 5 miles of wiring. The tree is also adorned with a star at its top and is a beloved tradition in New York City.