•Why it earns a slot
The story is a foundational text of American Gothic fiction, the first to systematically use architecture, heredity, and psychological terror as interlocking symbols, and its climax of premature burial and structural collapse remains one of the most precisely engineered endings in the short story form.
An unnamed narrator visits his childhood friend Roderick Usher, a hypersensitive recluse living in a decaying ancestral mansion with his gravely ill twin sister Madeline. After Madeline apparently dies and is entombed in a vault beneath the house, she returns from premature burial, kills her brother in her death agonies, and the entire mansion splits apart and sinks into the tarn.
This distillation is written from the freely available original, which is always the better read when you have the time: gutenberg.org.