The MoMA presentation of Frederick Kiesler’s Endless House condenses a radical spatial proposition into one sentence: walls, floor and ceiling merge into a continuous plane, producing an illusion of endless space. That continuity is more than a formal signature. It displaces the conventional architectural grammar in which horizontal and vertical surfaces possess fixed identities and predetermined junctions. The house is instead conceived as a differentiated continuum in which enclosure is produced without relying on the ordinary hierarchy of wall, slab and roof. In this sense Kiesler’s contribution is topological rather than stylistic. Spatial identity emerges through continuous transformation, while movement and perception replace the static reading of separate elements. The wider intellectual bridge is to relational geometries and environmental theories in which architecture is understood less as a collection of discrete components than as a continuous field whose local differences are produced internally.