How do you say lighthouse in Chinese?
— 燈塔; 灯塔; 灯塔

Generic synonyms for lighthouse in Chinese
tower塔樓, 塔楼 (tǎlóu), 塔 (tǎ), 樓閣, 楼阁 (lóugé), 樓臺, 楼台 (lóutái)