Rockefeller Center Christmas Tree (2012–present), and Hoda Kotb (2017–present). Tallest Tree on Record Rockefeller Center Christmas Tree The Rockefeller Center Christmas Tree is a large Christmas tree placed annually in Rockefeller Center, in Midtown Manhattan. The tree is erected in mid November and lit in a public ceremony in late November or early December. Since 1997, the lighting has been broadcast live, to hundreds of millions, on NBC's "Christmas in Rockefeller Center" telecast on a Wednesday after Thanksgiving. The broadcast features live entertainment and a tree lighting ceremony, where the tree is lit by the current Mayor of New York City and special guests.
Rockefeller University Rockefeller Jr. Greatly elevating the prestige of American science and medicine, it was America's first biomedical institute, like France's Pasteur Institute (1888) and Germany's Robert Koch Institute (1891). The Rockefeller Foundation, a philanthropic organization, founded in 1913, is a separate entity, but had close connections mediated by prominent figures holding dual positions. The first director of laboratories was Simon Flexner, who supervised the development of research capacity at the Institute, whose staff made major discoveries in basic research and medicine. While a student at Johns Hopkins University, Flexner had studied under the Institute's first scientific director, William H. Welch, first