Collins Chinese Dictionary Plus (3rd edition), 2011:
古色古香 gǔ sè gǔ xiāng have an antique feel
- 故宫(宮)里(裡)的建筑(築)物古色古香。 Gùgōng li de jiànzhùwù gǔ sè gǔ xiāng. The architecture of the Forbidden City has a real antique feel to it.