The Garden of San Marcos in Aguascalientes City is a park founded in 1847 that annually hosts the Feria Nacional de San Marcos — one of Mexico's largest and oldest festivals. The park is reportedly haunted by the ghosts of festival-goers from previous centuries. Visitors walking through the garden at night, outside of festival season, describe hearing the sounds of a phantom celebration — music, laughter, the clink of glasses, and conversations in archaic Spanish. Some have seen figures in 19th-century clothing dancing in the garden's pavilions, and others describe the smell of cooking food and gunpowder (from the fireworks that traditionally accompany the festival).
The haunting suggests a residual imprint of nearly two centuries of celebration on the same ground. Aguascalientes, a city in central Mexico known for its thermal springs and conservative Catholic culture, has a rich folklore tradition connected to the Feria. The festival itself is inseparable from the city's identity, and the garden's ghosts represent the generations of Aguascalentenses who attended the fair, celebrating, drinking, dancing, and dying — the full cycle of Mexican life compressed into a single festive location.