Sand Creek Massacre National Historic Site, in Kiowa County, Colorado was established in 2007 to preserve and protect the cultural significance of the Sand Creek Massacre, enhance public understanding, and minimize similar incidents in the future. Initial site assessments and planning documents prepared by the National Park Service identified management zones including; development, contemplative, sensitive resource, resource preservation and learning zones. Working within the planning framework, DHM further refined and developed the preliminary concepts into construction documents to provide visitor experience improvements through accessible, interpretive opportunities at Monument Hill, the primary visitor interpretive area. Due to the exposed nature of the site, numerous studies were conducted to evaluate wind, sun and viewsheds. The design team refined walk widths and routes for both an intimate contemplative experience and for larger gatherings such as the Annual Spiritual Healing Run. Parking lot improvements were refined and designed for personal vehicles, RV/Campers, and buses while accommodating overflow parking areas and future expansion.