Even if you’ve never heard of Alnwick Castle, chances are you’ve *seen* it. Maybe it was while watching Harry Potter and the Philosopher’s Stone, as first-year wizards learned to fly broomsticks on the lawn. Or perhaps in *Downton Abbey*, *Transformers: The Last Knight*, or even *Robin Hood: Prince of Thieves*. This castle is no stranger to the camera — and once you see it in person, you’ll understand why.

As the sun sets on November 2nd in the quiet borough of San Andrés Mixquic, the local cemetery begins to glow. Hundreds of candles flicker to life. Marigold petals form glowing pathways. The air is thick with the scent of copal incense and tamales. But this is no ordinary cemetery visit — this is a sleepover with the dead.