In Kyoto, on the territory of the former Imperial Palace of Sento, archaeologists unearthed a stone fortress wall and the remains of a 16th-century defensive moat. Scientists report that the fortress was erected by order of the famous military commander Toyotomi Hideyoshi (1536 or 1537-1598), who went down in history as one of the three "

Sento Palace was built in Kyoto in 1630 for the retired emperor Go-Mizunoo. Nearby built the palace of Omiya for the Empress. Since then, the palaces have repeatedly burned down and rebuilt, but after the fire of 1854, the Sento Palace was never rebuilt. Omiya Palace was built in the next, already eighth, time and is still used by Japanese emperors when visiting Kyoto. Two tea houses of Seika-tei and Yushin-tei, as well as a picturesque park with ponds, islets, bridges, footpaths, built in 1630 by the artist Kobori Masakazu, are now preserved from the Sento palace complex. The park is located in the southeastern part of the Kyoto Imperial Palace Complex, is managed by the Imperial Court Office and is accessible to the public..

The wall found during excavations is older than the Sento Palace. The features of the building indicate that it dates back to the period of Azuti-Momoyama (1568–1600), when the country passed from a state of feudal fragmentation to a unified rule. The preserved section of the wall has a length of about 8 meters and a height of 1 to 1.6 meters. It is assumed that before the collapse of the upper part, the height of the wall was 2.4 meters. The moat in front of the wall originally had a width of at least three meters and a depth of 2.4 meters.

The age of the building was confirmed when, when excavating the moat, a gilded tile with the name Toyotomi Hideyoshi was discovered. In the 1580s, this prominent commander received the highest posts in the state: the imperial regent Kampaku and the chief minister of the daijo-daijin.

In fact, he was the sole ruler of the country and with an iron hand created a united Japan, conquering province after province from local rulers.

Toyotomi Hiyoshi built several castles, including a huge castle in Osaka. The castle in Kyoto, the remains of which are now found by archaeologists, according to written sources, was built in 1591, a year before the death of the commander. Details about it have not been preserved, but the massive wall and gilded tiles indicate that it was a grandiose magnificent building.