La Fiesta de San Marcos is held annually in Aguascalientes, Mexico. It lasts for an entire month and is very famous. Dia de los Muertos is a pre-Columbian celebration that has been going on for thousands of years. It is considered a time to reconnect with family, here and departed. Altars are in home with pictures of family, food, flowers. It honors and remembers ancestors. Yes, families picnic in the cemetery and share stories. I always remember my Mom and she's been gone 25 years, her pictures comes out and I tell the granddaughters about her. One of my favorite holidays.