the places of interest是可数的。interestn. 兴趣，爱好；利息；利益；趣味；同行vt. 使……感兴趣；引起……的关心；使……参与例句：Interest rates have risen by 1%. 利率上升了1%。Interest rates stand at 3%. 利率为3%。
places of interest不可数。例句：I visited many places of interest. 我参观了很多名胜古迹。There are many places of interest in China. 西安是中国了不起的名胜之一。