Yes, the Christmas tree at Rockefeller Center is a real tree. Every year, the city of New York selects a large evergreen tree to be the centerpiece of the annual holiday celebration. The tree is typically donated by a private landowner or a local municipality, and it is then transported to Rockefeller Center where it is carefully decorated and illuminated. The tree is usually a species of pine or fir, and it is typically between 60 and 100 feet tall.