This year, the Nara National Research Institute for Cultural Properties has begun full-scale restoration of the Angkor ruins in Cambodia. Having restored the Heijo Palace in Nara, the Institute is known for its careful restoration methods based on thorough research and surveying. Having already carried out extensive surveying of the area, restoration of the Angkor ruins is finally ready to begin this year. This program is an up-close look at how Japan and Cambodia are cooperating to preserve the ruins, and highlights Japan's unique way of contributing to the international community through protecting cultural heritage sites.