Phonetic transliteration of "Cape Town": 开 (kāi, "open") for "Cape," 普敦 (pǔdūn) for "Town." The character choices are purely phonetic and don't reflect the city's meaning.
culture
Cape Town sits below Table Mountain (桌山, Zhuōshān) at the southern tip of Africa. It's South Africa's legislative capital — the country has three capitals (Pretoria, Cape Town, Bloemfontein).