Christmas lights typically go up in New York City around the beginning of December. The city is known for its elaborate and festive displays, with buildings, trees, and even bridges being lit up with colorful lights. Many of the displays are designed to evoke the magic and wonder of the holiday season, with some being quite elaborate and even interactive. It's a popular tourist destination during the holidays, with many people coming from all over to see the dazzling displays and experience the holiday spirit.