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Nagasaki, capital and largest city of Nagasaki ken (prefecture), western Kyushu, Japan, located at the mouth of the Urakami-gawa (Urakami River) where it empties into Nagasaki-kō (Nagasaki Harbour). The harbour is composed of a narrow, deep-cut bay, formed at the meeting point of Nomo-saki (Cape Nomo; south) and Nishisonoki-hantō (Nishisonoki Peninsula; northwest). The city is shaped like an amphitheatre, with its crooked streets and tiered houses clinging to the hillsides that enclose the inner bay. Reclaimed land at bayside and the Urakami Basin provide some level land. Although the perception is that the city is totally modern and rebuilt since 1945, actually Nagasaki has a number of areas where old buildings and temples remain.