Obsidian, a striking volcanic glass, has been used for centuries to create captivating art. Among the most famous outdoor sculptures made from this material is "Black Sun" by Isamu Noguchi, located in Seattle. This massive obsidian disc reflects light uniquely, blending nature and artistry. Another notable piece is "Obsidian Mirror" by Anish Kapoor, which uses polished obsidian to create mesmerizing reflections.

In Mexico, the ancient Aztecs carved intricate obsidian sculptures, some of which are displayed outdoors in museums like the National Museum of Anthropology. Modern artists like James Turrell have also incorporated obsidian into large-scale installations, playing with light and shadow.

These sculptures highlight obsidian's beauty and cultural significance, making them must-see landmarks for art enthusiasts. Their dark, glossy surfaces and symbolic meanings continue to inspire awe worldwide.