Outdoor sculptures inspired by cosmic cathedrals are monumental art installations that merge spirituality, architecture, and creativity. These awe-inspiring works often evoke a sense of the divine, blending celestial themes with earthly materials. Among the most famous is Anish Kapoor's "Cloud Gate" in Chicago, whose mirrored surface reflects the sky like a celestial portal. Another notable example is James Turrell's "Roden Crater," an earthwork transforming a volcanic crater into a cosmic observatory. Richard Serra's towering steel curves, such as "The Matter of Time," also echo the grandeur of sacred spaces. These sculptures redefine public art, inviting viewers to contemplate the universe's vastness while grounding them in tangible, breathtaking forms.