The adjoining Sleepy Hollow Cemetery, which continues on up the hill behind the church, contains the well-marked grave of Irving, who has been joined by other famous Americans including Andrew Carnegie, Brooke Astor, and Elizabeth Arden. This cemetery displays the grander marble monuments that came into fashion around the mid-19th century. Winding roads wrap around the steep hill in the Romantic style of the era. The accidental spookiness of neglect is overtaking the upper slopes: Branches of overgrown Norway spruce shade 19th-century family plots fenced in by rusty railings, and thickets enfold some of the older stones.