The upper part of the Motoki River, which flows through the mountains in the eastern part of Fukutsu City, is known to have seen firefly raunts in early summer. Hotaru-no-sato, which has been made into a park with its firefly habitat, is a natural-rich park of about 1km long along the Motoki River. The hills of the sun, a plum forest where 140 plums of 11 varieties can be seen, and a cherry blossom forest with 220 cherry trees of 6 varieties are provided, so you can enjoy forest bathing and walking. Firefly awards are recommended from late May to early June from around 19:30 to just over 20 o'clock.

A collective term for the burial mounds scattered on the hills facing the Genkai. Over a wide range of about 8km north-south and about 2km east-west, the Katsuura Kogen mound, Katsuura Minohata mound, Niihara/Nuyama mound, Sudata mound, Miyachi Takekoko mound, Temitsu Wagiri mound, etc. It consists of a total of 60 groups of one mass. It is designated as a national historic site except for some. The tumuli were built in the 5th to 7th centuries. The tomb group of the Munakata clan, an ancient royal family who nurtured their faith in Okinoshima. Among them, the Niihara-Nuyama Kofun group is registered as a constituent asset of the World Heritage Site "" Kamijuku Ruru Island "Munakata, Okinoshima and Related Heritage Group".

Among the nation-designated historical sites, the Tsuyazaki Kofun group has the largest concentration of burial mounds. A total of 41 burial mounds have been built up between the 5th and 6th centuries on a plateau facing the former entry sea, which is now a paddy field. From the observation post on the southern side of the Kofun group, you can see the sea that leads to Oshima and Okinoshima, where the Kofun mounds scattered among the rice fields and the Munakata Taisha Nakatsu-gū are located. As a group of tombs proving the existence of the ancient royal family, the Munakata clan, who nurtured their faith in Okinoshima, it was listed as a World Heritage Site as a constituent asset of the "Kamishuru Ru" Munakata, Okinoshima and the related heritage group.