The influential novel written by Mary Shelley during the Romantic era is "Frankenstein," published in 1818. This groundbreaking work tells the story of Victor Frankenstein, a scientist who creates a sentient being through an unorthodox experiment. The novel explores themes of ambition, creation, and the ethical implications of scientific exploration, reflecting anxieties about the Industrial Revolution and human nature. "Frankenstein" has had a lasting impact on literature and popular culture, often considered one of the earliest examples of science fiction and a profound commentary on the relationship between creator and creation.