The Mizuta House is a facility that is strongly like a personal monument dedicated to the achievements of Mizuta Mikio, who was a politician from this area and the founder of Josai University. It is managed by the juridical organization of Josai University, and a restoration work was performed as program for the 30th anniversary of the establishment of Josai University's Graduates Association.

Mineoka Ranch is small compared to other ranches under direct control of the Tokugawa government, but it still has a perimeter of 64km and an area that reaches 1760ha. It was managed by separating it into 5 parts, and Haccho Jinya _ an administration institution - was placed on the site at Nishihira, close to the centre of the area, to manage the ranch. Even now, the premises, a well and Jinya-inari (sort of shrine) remain. It is recorded that the Haccho Jinya building was a size of 2 ken x 3 ken (approx 1.1m x 1.65m). Currently it is deteriorating, but provisional measures regarding such history of this place are much-awaited.

The Sen-ninzuka Tumulus (also Kankanzuka Tumulus) is a circular tumulus of diameter 8m and height 2m. It is marked on a historical sites map as a "Ninzuka" from the middle ages, but since there is no such archeological term as "Ninzuka", it is unclear as to what sort of a historical site this is. It is traditionally told that this is a place where the war dead were buried after many fell in a battle during the period of Satomi. If this was true, then it would be a medieval burial mound, but it cannot be determined as there is no commemoration tower. The possibility that it could be an ancient tomb or a mound also needs to be assessed.

Yamanojo Castle is a single-fence mountain castle with kuruwa zones created by earth mounds and stepping-cuts. A scaffold base has also been confirmed. This castle was built by Masaki Michitsuna, the first of the Masaki clan, to conquer the land of Nagasa. It is told that the site of Toushiro's manor located down below the castle ruins is the site of the manor of Sakai Toshiro, a follower to the Masaki clan. However, since the method of constructing a manor on a spacious area isolated by earth mounds or cliffs near the lower side of the castle is akin to many others of the Masaki clan's castles, it would be better to assume the manor house site is part of the one ruin, together with the actual castle.

It is said that this temple originated when Kobo-Daishi (a religious leader) was preaching and traveling around many areas, he was struck by the beautiful scenery of this land, and carved a Fudo-myouo statue himself and built a temple chamber to store it in. In the first half of the 1500s, Masaki Tokishige _ lord of Yamanojo Castle _ restored it and renamed it Shiratakisan-Ryukokuji temple.

During construction work to build the Mineoka centre forest road in 1970, a shichireikyo (a mirror with seven bells attached), a Sahari bowl, a clay-pottery goblet, a clay-pottery ornament board with the inscription "Choja" and the lid of a three-colored cinerary urn was discovered in so called Amatsuka. Judging from these relics, it can be estimated that this place was a site of a cremation cemetery from the Nara Period. From the example of a clay figure, reikyo (a bell-attached mirror) is thought to be the possession of a priestess, so it is likely that this cemetery site is an okutsuki (tomb) of such enforcers of rituals. Near the area from which these relics were discovered, a "cushion-shaped ancient tomb" _ with an equal possibility of being a cemetery site _ remains.

The horse-catching place in the Mineoka East Ranch is different in that it has stone-lined walls as opposed to the Mineoka West Ranch, which has embankments. The horse-catching places of two periods _ new and old - was overlapping, but the new horse-catching place was destroyed uninvestigated due to the construction of the Mineoka Centre Forest Trail, but it still remains in a condition in which its structure can be seen. Of the total number of wild horses, about 30 horses were captured in one year, with 6 horses per ranch on average.

Of the four ranches under direct control of the Edo government, features distinctive to the Mineoka Ranch include 1) that it is a hill-shaped ranch, 2) that it is plentiful in grass for animal feed, and 3) that water is abundant. Watanuki Natsuemon, Magistrate for Wild Horses, in the report for his research into whether Mt. Mineoka was suitable for a ranch which he submitted to the government in 1721, notes that it is abundant in spring water for the wild horses to drink and that there were about 60 waterholes. As the Mineoka Ranch is hill-shaped, waterholes remain even in high altitudes. A Makishi (ranch manager) managed the area by dredging the ponds.

On the hillsides of Raishuazakaido, there are 32 gorinto stupas standing in one place. No other place in Chiba Prefecture knows of such a massive cluster of gorintoes. Moreover, there are 28 one-stone gorins, which are gorinto stupas carved out in flat, on the boat-shaped Mineoka rocks. There are traces of stone mounds on the outcrop, and it can be estimated that this was a special commemoration place or a mass cemetery.

At the Guminokida site, 13 remains of homes from the Nara Period to Heian Period have been excavated. Home at that period were semi-subterranean housings, with earth dug out to create walls and pillars erected to thatch roofs. There are also ovens in each of the homes. As indicated by the sites of jori rice fields system remained in Kamogawa, growing and harvesting rice crops were a boom in the Nara Era. It could be the steam drifting from the ovens boiling rice. A spindle has also been discovered, but to find out if the clothing was made from Karamushi (Boehmerla nivea) or not, we must wait for further research.