Octetra is a monumental concrete sculpture by renowned Japanese American artist and landscape architect Isamu Noguchi. Designed in 1968, the work consists of five interlocking truncated tetrahedrons inspired by the geometric principles of Buckminster Fuller, who viewed the tetrahedron as one of nature's fundamental building blocks. Noguchi originally conceived Octetra as a play sculpture, encouraging children to climb and interact with it while blending art with everyday public life.
Weighing 12,000 pounds, Octetra was installed in 2016 at Freeman Plaza East in Hudson Square, near the Manhattan entrance to the Holland Tunnel. The sculpture transformed a former Port Authority toll plaza into a striking public landmark. Its circular openings frame views through a series of interconnected spaces, inviting visitors to explore the work from multiple perspectives and experience Noguchi's vision of sculpture as both art and architecture.