Built in 1904, this vast facility with over 330,000 square meters is a landmark to honor the friendship between Thailand and Japan, and to unify the several Buddhist sects of Japan. The very district name, “Kakuozan”, comes from this important place: “Kakuo” being one of the names by which Buddha is called in the country, and “zan” meaning “mountain”. Another interesting fact: when construction of the initial temple was completed, it was named Nissenji, which meant “Japan-Siam Temple”. In 1939, Siam became Thailand, and that prompted Japanese priests to rename it to the current denomination in 1942.

Besides the 15-meter high Gandhara-style stupa tower made in granite which enshrines the Holy Ashes, called Hoanto, the temple has several buildings that are a plateful for tourists.
•Main Prayer “Hondo” Dharma Hall: houses the original figure of Buddha also donated by the King of Siam in order to congratulate the decision to build a dedicated temple. The bronze statue plated in gold is believed to have been already over 1,000 years-old when gifted to Japan, and was considered a National Treasure in Thailand not only for its spiritual significance, but also because its manufacture employed an ancient technique long forgotten in that country. It also houses several other important relics.
•“Shariden” Reliquary Hall
•“Gojunoto” five-storied pagoda: a 30 meter-high tower housing sutras also gifted by Thailand
•“Bochi” Cemetery: resting place of many important figures of the past
•“Reido” Spirit Hall: a modern indoor cemetery with four pavements
•The statue of King Chulalongkon: adorned by the “kaikozu” flower planted by the Crown Prince of Thailand himself, and which blooms on May and June
•Main Gate with the two majestic statues of Ananda and Mahakasyapa
•Bell Tower
•“Koshakudai” Incense Hall
•“Fumonkaku” Wide Gate Hall
•“Hootai” Phoenix Hall
•“Soketsuan”, or “Taroan” Tea House
•The “Hachiju-hakkasho Reijo”, a simulacrum of the pilgrimage throught the 88 Spiritual Spots of Japanese Buddhism