Father's house and hidden laboratory

The father's house and hidden laboratory is the domestic space where Nathaniel's childhood trauma originates and where the story's central horrors are first enacted. It is the site of the family's evening routine, the terrifying appearances of Coppelius as the Sandman, and the secret alchemical experiments that culminate in the father's violent death. The house functions as a threshold between the ordinary world of family life and a hidden realm of dark, mechanical forces, and its architecture—the study, the round table, the concealed closet with its hearth—becomes the physical stage for Nathaniel's psychological undoing.

Layout and Family Routine

The house is organized around a study where the family gathers each evening after supper at seven o'clock. Nathaniel, his siblings, and his mother take their places at a round table while his father smokes a pipe and drinks a tall glass of beer. On some evenings the father tells wondrous tales, and it is Nathaniel's duty to fetch a burning wad of paper to relight his pipe, a task that gives the boy great pleasure. On other evenings the father sits in silence, blowing dense clouds of smoke, and the mother grows very sad. At the strike of nine she declares that the Sandman is coming and sends the children to bed. The house also contains a nursery, from which Nathaniel is moved at age ten to a little room off the corridor not far from his father's study, a relocation that brings him closer to the nightly mystery.

The Hidden Laboratory and Alchemical Work

The most significant feature of the house is a wall closet that is not a closet at all but a dark, hidden space fitted with a small hearth. When Nathaniel spies on his father and Coppelius, he sees them pull on long black smocks and open the folding door of this concealed chamber. Coppelius steps forward and a blue flame flickers forth; all kinds of curious instruments are scattered about. The father bends toward the fire and his gentle features twist into a ghastly convulsive grimace, making him look just like Coppelius. Coppelius swings red-hot tongs and fetches a bright, flickering mass of ore out of the thick vapor, which he then assiduously hammers. During this work, human faces appear to Nathaniel all about, but without eyes—dreadful, deep, black hollows where the eyes ought to be. Coppelius cries out "Eyes out, eyes out!" in a muffled, roaring voice, and when Nathaniel screams and bursts from his hiding place, Coppelius grabs him, hurls him at the hearth so that the flames singe his hair, and grabs glowing cinders from the flames intending to strew them in the boy's eyes. The father pleads with folded hands for Nathaniel to keep his eyes, and Coppelius relents, instead twisting the boy's hands and feet as if examining the mechanism of a doll.

The Father's Death

About a year after Coppelius stops visiting, he returns one evening. The family is seated at the round table when they hear the front door hinges creak and slow, leaden steps thump through the hallway and up the steps. The mother goes pale and the father confirms it is Coppelius, promising it will be the last time. After the family is sent to bed, a terrible boom like a cannon shot goes off at midnight, the whole house rumbles, and the front door is slammed shut with a mighty clatter. Nathaniel rushes to his father's room to find the door open, a suffocating steam filling the air, and his father lying dead on the floor in front of the steaming hearth, his face terribly contorted and burnt black. The mother lies unconscious at his side. Two days later, when the father is laid in his coffin, his expression is once again mild and gentle as it had been in life, offering some comfort that his pact with Coppelius had not condemned him to eternal damnation. The explosion awakens the neighbors, and the authorities issue a warrant for Coppelius's arrest, but he has disappeared without a trace.

Narrative and Thematic Significance

The father's house and hidden laboratory is the physical anchor of Nathaniel's trauma and the source of the story's central symbols. The concealed hearth and the alchemical apparatus represent the hidden, mechanical forces that Nathaniel believes govern human life, while the repeated motif of eyes—the hollow sockets in the faces Nathaniel sees, Coppelius's threat to take his eyes, and the father's plea to let him keep them—establishes the looking-glass and the theme of vision that will later drive Nathaniel to madness. The house is also the site of the family's evening routine, whose disruption by Coppelius's visits marks the intrusion of the uncanny into domestic life. The father's death in the laboratory, caused by an explosion during alchemical work, prefigures the later revelation that Olympia is an automaton and that Spalanzani and Coppelius have collaborated on mechanical creations. The house thus serves as the origin point for the story's exploration of the boundary between the human and the mechanical, the seen and the unseen, and the traumatic repetition that ultimately destroys Nathaniel.