About the Kotani Family Residence Main Gate

The Kotani Family Residence Main Gate (小谷家住宅正門, Kotani-ke Jūtaku Seimon) is a Nagayamon, a gatehouse with rooms built into it, in Toyoda, Minami-ku, Sakai, Osaka Prefecture, built in the mid-Meiji era (1883 to 1897) and entered on Japan's register of Registered Tangible Cultural Properties in 2013. It stands on the west side of the estate with its ridge running north to south. The single-story timber structure covers 68 square meters, and the national record notes that it comes with an attached corridor and wall.

From the road, a stone-paved ramp climbs from the entrance in an S-curve, and the main gate waits at the top. It is the first building that visitors to the Kotani Family Residence face head-on, the formal front of the estate.

A Hip-and-Gable Gatehouse

The roof of the Kotani Family Residence Main Gate is hip-and-gable (Irimoya-zukuri) and laid with traditional round-and-flat tiles (Hongawarabuki). The estate's south gate, by contrast, has a plain gabled roof (Kirizuma-zukuri), so the two gates differ in roof form.

The passage opens slightly south of center. Board doors hang from the main posts (Kagami-bashira), and small wicket doors (Kugurido) on either side let people come and go without swinging open the large leaves. South of the passage is a five-mat room fitted with a lookout lattice (Monomi-gōshi) for watching the outside. To the north are two more rooms, and the northernmost is covered by a separate, lower roof (Ochimune).

The walls are finished in white lime plaster (Shikkui), with the lower part clad in horizontal boards held by notched battens, a kind of Shitami-itabari called sasarako. The Agency for Cultural Affairs says this combination gives the gate a stern air. According to Sakai City, the main timbers are Keyaki (zelkova).

Why It Was Registered

The Kotani Family Residence Main Gate was registered as a structure that contributes to the historic landscape of the country. Sakai City points to the main gate in particular: together with the steep stone-paved ramp and the plastered earthen wall, it recalls the approach to a mountain castle. That impression fits the history of the site, since the estate occupies the southwest corner of the former Kotani Castle.

Look at how the roof steps down. Against the full hip-and-gable roof, the lower roof over the northern end gives the long building a break in height. From the foot of the ramp, both that step and the horizontal line of the dark boarding under the white plaster are easy to pick out.

Seeing the Main Gate

The Kotani Family Residence Main Gate can be viewed from outside only. The interior of the estate is closed to the public, so you cannot walk through the gate. Because it sits at the top of the ramp on the west side, the usual view is from the road on the west, looking up past the stone paving.

There is no official statement on photography, but as the estate does not open its interior, avoid shooting into the gateway. Directions are on the Kotani Family Residence page.

📍 Plan Your Visit to Osaka
Find tours, activities & transport passes near Kotani Family Residence Main Gate
[ USJ Tickets Osaka Castle & Dotonbori Food Tours ]

Q&A

QWhere can you see the Kotani Family Residence Main Gate?
AFrom the road on the west side of the estate, looking up the S-shaped stone ramp. The estate is closed to the public, so you cannot pass through the gate.
QWhen was the Kotani Family Residence Main Gate built?
AIn the mid-Meiji era, between 1883 and 1897. The south gate and the earthen wall date from the same period.
QHow does the Kotani Family Residence Main Gate differ from the south gate?
ABoth are gatehouses, but the main gate has a hip-and-gable tiled roof and covers 68 square meters, while the south gate has a gabled tiled roof and covers 108 square meters. The main gate's passage is just south of center, and its northern room sits under a lower roof.
QWhat is the lookout lattice on the Kotani Family Residence Main Gate?
AIt is a latticed window for keeping watch on the outside. On this gate it belongs to the five-mat room just south of the passage.
QWhen did the Kotani Family Residence Main Gate become a Registered Tangible Cultural Property?
AIt was registered on June 21, 2013, together with the main house, the south gate and the earthen wall. Its registration number is 27-0566.

Basic Information

NameKotani Family Residence Main Gate (小谷家住宅正門)
Location1612 Toyoda, Minami-ku, Sakai, Osaka Prefecture
DesignationRegistered Tangible Cultural Property (Structure)
Year Designated2013 (registered)
Quantity1 building
DimensionsBuilding area 68 square meters (single-story timber, with corridor and wall)
OwnerNot disclosed
Public AccessInterior closed (exterior viewing only)

References

Database of National Cultural Properties (Agency for Cultural Affairs): Kotani Family Residence Main Gate
https://kunishitei.bunka.go.jp/bsys/maindetails/101/00009651
Cultural Heritage Online: Kotani Family Residence Main Gate
https://online.bunka.go.jp/heritages/detail/206737
Sakai City: Kotani Family Residence (Main House, Main Gate, South Gate, Earthen Wall)
https://www.city.sakai.lg.jp/kanko/rekishi/bunkazai/bunkazai/torokuseido/kotanikejyuutaku.html

Last verified: 2026.09.29