Outdoor sculptures have long been a medium for artists to express grand ideas, but few concepts are as intriguing as those incorporating cosmic voids. These sculptures, often inspired by the mysteries of space, use negative space or abstract forms to evoke the vast emptiness of the universe.

One notable example is Anish Kapoor's "Cloud Gate" in Chicago, though not explicitly a void, its reflective surface creates an illusion of infinite space, mimicking cosmic emptiness. Another striking piece is James Turrell's "Roden Crater," an earthwork in Arizona that transforms a volcanic crater into a celestial observatory, playing with light and perception to evoke the void.

More abstractly, Rachel Whiteread's "House" in London cast the interior space of a demolished home in concrete, creating a haunting monument to absence—a terrestrial echo of cosmic voids. Similarly, Olafur Eliasson's "Your Rainbow Panorama" in Denmark uses circular architecture to frame the sky, turning the viewer's gaze toward the infinite.

These sculptures challenge traditional notions of form and material, using absence as powerfully as presence. By engaging with cosmic voids, they invite viewers to contemplate the unknown, making them some of the most thought-provoking public artworks in the world.