Goshobo New Building

A Hybrid Wing of the 1950s

Goshobo Shinkan (御所坊新館, also written Goshoboh Shinkan), the newer wing of the Goshobo inn at Arima Onsen in Kita Ward, Kobe, Hyogo Prefecture, is a building of about 1955 combining timber and reinforced concrete, extended in 1961, and registered as a Tangible Cultural Property of Japan on 24 June 2021.

It stands higher up the slope than the Honkan, on the south side of the same property. Arima is built on a valley wall, and every plot here has to negotiate a fall of several metres across its width. The Shinkan negotiates it by changing construction method partway through.

The date matters. Around 1955 Japan was ten years out of the war, materials were becoming available again, and hot spring towns were rebuilding for a domestic tourist market that had barely existed a decade earlier. Reinforced concrete was no longer exotic, though it remained expensive, and inns of this period often used it selectively: for the parts of a building that had to hold back earth or carry unusual loads, with timber above. The Shinkan belongs squarely to that moment.

Counting the Floors

The national register describes the building as timber and reinforced concrete, two storeys above ground with one below, roofed in tiles with copper sheeting in places, and covering 351 square metres of ground.

The descriptive appraisal in the same record tells it differently. It splits the Shinkan into two parts: a section of three-storey timber construction, and a mixed section where two timber levels sit on top of a single concrete storey. The Agency's photographic index adds a third phrasing, labelling one image as room 54 on the fourth level of the first-phase timber portion.

These are not contradictions so much as three answers to a question that has no single answer on sloping ground. Where the ground floor lies depends on which side you stand. A level that is a basement from the uphill approach is a ground floor from the stream below, and a room reached by climbing two flights from the entrance may sit four levels up when counted from the lowest point of the structure. Anyone walking the corridors here will feel this before understanding it. Stairs appear where a flat corridor was expected.

Registration number 28-0750 was granted under the criterion of contribution to the historical landscape of the nation, in the same ninety-ninth round as the Honkan and the storehouse. The register notes an extension in 1961, six years after the main build.

Surfaces and Lines

From outside, the Shinkan is deliberately quiet. Its walls carry sprayed mortar, matching the Honkan below, and the roof is laid with the same sangawara pantiles. A visitor scanning the slope from across the Takigawa would read the two buildings as one composition rather than as separate works of 1900 and 1955. The official appraisal notes that the Shinkan forms the middle band of the property's presence in the townscape, the connecting element between the riverside frontage and the hillside above.

The interior is where the building declares its period. The appraisal singles out a decorative scheme built on horizontal and vertical lines, applied consistently, and applied even in the Japanese-style rooms. This is worth pausing over. Traditional zashiki design already runs on straight lines, in the tatami joints, the kamoi and nageshi rails, the shoji grid. What the 1950s designer did was take that inherited geometry and push it, aligning elements that would ordinarily be allowed to drift, letting the grid become the subject rather than the background. The result reads as modern without importing a single foreign motif.

Guest rooms occupy the wing, so access depends on your booking. The inn groups its rooms under poetic names and counts their levels from the entrance floor, which means the floor number on a reservation will not always match the level counted from the street. Ask at the desk if the distinction matters to you, for instance if stairs are a concern; the bath sits at a level that suits some rooms better than others.

Visitors not staying overnight can still enter the building complex. Day bathing at Kinkyōsen runs 11:00 to 14:00 for ¥2,250 including bathing tax, closed Mondays. The water is a strongly saline iron-bearing chloride spring drawn from the Gosho and Netamu sources and served without dilution or recirculation, emerging at the wellhead at around 95 degrees. Arima calls this brown water kinsen, the golden spring; the colour is iron oxidising on contact with air.

Arima-Onsen Station on the Kobe Electric Railway is roughly five minutes away on foot. Photography of the exterior from public ground is fine. Inside, the corridors are shared with guests in yukata, so discretion applies.