An elaborate system of subdivision was adopted. The unit, or _ko_ (house), was a space measuring 100 feet by 50. Eight of these units made a row (_gyō_); four rows, a street (_chō_); four streets, a _ho_; four _ho_, a _bō_, and four _bō_, a _jo_. The entire capital contained 1216 _cho_ and 38,912 houses. The streets lay parallel and at right angles like the lines on a checkerboard. The imperial citadel measured 3840 feet from east to west, and 4600 feet from north to south. On each side were three gates, and in the middle stood the emperor's palace, surrounded by the buildings of the various administrative departments. This citadel was environed by double walls, and contained altogether seventeen large and five small edifices, every one of them picturesque and handsome. Great and fine as was this metropolis, it suffered such ravages during the disturbances of succeeding centuries that the Kyōto of to-day, the "Sakyō," or Western Capital, is but a shadow of the left section of ancient times. Not even the imperial palace escaped these ravages. Again and again impaired or destroyed by conflagrations, it gradually assumed smaller and smaller dimensions until only a trace remained of the splendid edifice that had once stood in the center of the citadel. But the regularity of the streets could not be obliterated. That at least survives to tell the story of the plan on which the city was constructed. Indeed, Kyōto continued to be the seat of sovereigns for a long period, covering 1074 years, and until the capital was removed in 1869 to Tōkyō.