The noun 纪念碑 (jìniànbēi) means "monument" or "memorial." It combines 纪念 (to commemorate) and 碑 (stele/stone tablet). It refers to structures built to honor people, events, or achievements, such as historical landmarks.
广场中间有一座很高的纪念碑。
guǎngchǎng zhōngjiān yǒu yí zuò hěn gāo de jìniànbēi.
In the middle of the square stands a very tall monument.
人们在纪念碑前献了花。
rénmen zài jìniànbēi qián xiàn le huā.
People laid flowers in front of the monument.
这座纪念碑是为了纪念抗战英雄建造的。
zhè zuò jìniànbēi shì wèile jìniàn kàngzhàn yīngxióng jiànzào de.
This monument was built to commemorate the heroes of the war of resistance.