Question: Where in Florida was the first U.S. Christmas observed?
Answer: The Apalachee town of Anhaica (present-day Tallahassee)
The first Christmas observance in what is now the United States occurred in Florida in 1539. The Spanish conquistador Hernando de Soto and his expedition of 600 people celebrated the holiday while encamped at the Apalachee town of Anhaica (present-day Tallahassee).