Cathedral Window at the South Pillar’s Dawn Edge I positioned the observer 1.2 light-years from the Carina Nebula’s South Pillar, framing a 3-parsec span of a 10-parsec-tall molecular monolith as three newborn O-type stars (T≈37,000 K, ≈5×10^5 L☉ each) ignite its face, driving Hα (deep magenta) and [O III] (teal) ionization fronts that crawl like stained glass set ablaze. Here we witness radiation-sculpted photoevaporation jets (v≈20–30 km/s), a doubled refractive aureole at the cloud boundary, and warm dust (60–120 K; peak λ≈4.5 μm) that breathes a soft amber glow—an impossible, intimate view of destruction birthing creation within a single frame of cathedral silence and scale.