Commissioned for the 1980 Olympic Winter Games in Lake Placid, New York, ​30 Below i​s a 30-foot, open-ended tower made of 10,000 locally-sourced bricks. The upper openings and arches at the base run north to south, while the side openings run east to west—aligned to the North Star. “I am putting ‘centers of the world’ wherever I go,” Holt stated. ​30 Below ​is both an anchor, grounding perspective along the cardinal directions, and a channel, connecting the subject with unadulterated views of sky.

Holt designed ​Dark Star Park i​n concert with the development of the site as a whole, integrating landscaping and sculptural features to encompass the neighboring building and adjacent traffic island. Concrete spheres are interspersed throughout the park, visible through tunnels, reflected in pools of water, and framed in the carved-out hole of another sphere. Every year on Dark Star Park Day people gather to watch the shadow alignment.