象征 can be both a noun ('a symbol') and a verb ('to symbolize'). As a verb, it often takes 着: 象征着... (symbolizes...). As a noun: ...的象征 (a symbol of...).
culture
Key Chinese symbols: 龙 (dragon) symbolizes power and the emperor, 凤凰 (phoenix) symbolizes the empress and beauty, 红色 (red) symbolizes luck and celebration, 数字八 (number 8) symbolizes wealth.