Kuroi Castle
A mountain castle rising 356m above Tanba-Sasayama in the mountains of northern Hyogo. Nicknamed the 'Castle of the Clouds' for its spectacular fog-shrouded appearances, it was the stronghold of the Saito clan and later fought over by Akechi Mitsuhide.
| Japanese Name | 黒井城 |
|---|---|
| Prefecture | Hyogo Prefecture (兵庫県) |
| Region | Kinki (近畿) |
| Castle Type | Mountain Castle |
| Year Built | 1340 |
| Designation | 続100名城 |
| Coordinates | 35.2, 135.1667 |
Kuroi Castle earns its poetic nickname, the 'Castle of the Clouds,' from its position high above Tanba-Sasayama in the mountainous northern reaches of Hyogo Prefecture. Rising 356 meters above the surrounding landscape, this mountain castle represents the continued prestige of castles recognized among Japan's extended 100 castle selections. Its dramatic appearance shrouded in fog has made it a subject of historical chronicles and artistic depiction for centuries.
Established in 1340, Kuroi Castle developed gradually as a regional power base, eventually becoming the stronghold of the Saito clan during the Sengoku period. The castle gained further historical prominence when it became contested territory during the campaigns of Akechi Mitsuhide, one of Japan's most notable military commanders. These power struggles left marks on the castle's structure and history.
The castle's defining characteristic is its extreme elevation and the dramatic terrain surrounding it, which provided natural defensive advantages in addition to constructed fortifications. Stone walls and structural remains are scattered across multiple levels of the mountain, creating a complex defensive system that took advantage of the steep topography. The misty conditions that frequently envelope the peak add both atmospheric beauty and historical authenticity to the experience of exploring its ruins.
Visitors undertaking the climb to this elevated site encounter a landscape that has changed little since the castle's active period, offering an immersive historical experience. The effort required to reach the castle mirrors the commitment demanded of those who held it during Japan's medieval period.
Kuroi Castle is recognized as one of Japan's second 100 castles as designated by the Japan Castle Foundation, a distinction that highlights its historical and architectural importance among the hundreds of castle sites across the country. As a mountain castle, its design reflects the defensive priorities and construction techniques of its era, with origins dating to 1340. Visitors traveling to Hyogo Prefecture can explore the site alongside other regional historical attractions.
On the Ground
| Address | Ichijimacho-Uemaki, Tamba, Hyogo Prefecture, 669-4317, Japan |
|---|---|
| Car parking | 2 car parks within 1.5 km — nearest about 517 m away |
| Public toilets | None recorded within 1.5 km |
Car parks and toilets are counted from OpenStreetMap within 1.5 km of the castle coordinates, as recorded on 2026-08-15. They are not necessarily run by the castle, and OpenStreetMap does not record every facility — “none recorded” does not mean there are none.
Castle Hopping from Here
| Castle | Distance |
|---|---|
| Fukuchiyama Castle 福知山城 | 11.5 km |
| Sasayama Castle 篠山城 | 15.2 km |
Distances are straight-line between castle coordinates, not travel distance. Only castles within 30 km are listed.
Is It Original?
| Original keep still standing? | No — this castle is not among the twelve in Japan whose keep survives from the pre-modern period. Any tower here is a later reconstruction or the site is a ruin. |
|---|---|
| Classification on this site | Historic Ruins |
| Nationally designated properties recorded here | 1 |
| Recorded property names (Japanese) | 黒井城跡 |
The count of twelve surviving keeps is stated independently by the official sites of Matsue, Maruoka, Matsuyama and Bitchu Matsuyama (checked 2026-09-04). Each of the twelve carries its own source on its own page. The classification line below it is this site's own grouping, not an official designation. The designated properties below it come from the Agency for Cultural Affairs national database of designated cultural properties (国指定文化財等データベース), retrieved 2026-08-13. Official record. A missing line means no entry was found in that database — not that the property is undesignated.
Location
View larger map — © OpenStreetMap contributors
Sources and What a Blank Means
Data on this page comes from OpenStreetMap, Wikimedia Commons and the Agency for Cultural Affairs national database of designated cultural properties. Checked 2026-08-22.
A blank or missing line means we found no record in those sources — not that the castle lacks the thing. Admission fees, opening hours and access change without notice; please confirm with the official site before travelling.