Okunoin Temple is a Buddhist temple located on Mount Koya, Japan. It was founded in the 9th century and is considered one of the holiest sites in Japan. The temple is the final resting place of Kukai, the founder of the Shingon sect of Buddhism, and is considered a site of pilgrimage for Shingon Buddhists. Okunoin Temple is known for its peaceful atmosphere and the thousands of gravestones and memorials that line the approach to Kukai’s mausoleum. The temple is also home to several halls, including the Main Hall, which houses a statue of Kukai, and the Hall of Lanterns, which is lit by thousands of lanterns at night. The temple is located in the heart of Mount Koya, which is considered a sacred site and is home to over a hundred other temples and monasteries. Okunoin Temple is a popular destination for tourists and is a unique and spiritual experience for those interested in Buddhism and Japanese history.