番国故城遺跡, Archaeological site in Gushi County, China.

The Fanguo Ancient City Site is an Eastern Zhou period walled city ruin in the north of Gushi County, Henan, in Fancheng Subdistrict. Its main section is laid out as the Gucheng Park, open to the public free of charge, and the north-south Gucheng Road runs along its west side, taking its name from the site.

The site is an Eastern Zhou walled city in present-day Gushi County, Henan. In spring 1978 a set of chime bells bearing the inscription "Fanzi chen Zhou" was unearthed from a burial pit of Hougu Mound Tomb No. 1, about 1.5 km southeast of the ruins, confirming the existence of the state of Fan, whose existence had been doubted. The State Council later listed the site among the fifth batch of Major Historical and Cultural Sites Protected at the National Level.

The layout and structures reveal how people organized daily life and community activities during ancient times. Objects found here show what residents valued and how different social groups lived together in this early settlement.

The site lies north of Gushi county town, in Fancheng Subdistrict; the main area is laid out as Gucheng Park, open free of charge. Gucheng Road runs north-south along the western edge of the ruins and takes its name from them. The excavated Hougu Mound No. 1 tomb lies about 1.5 km southeast of the site.

The 1978 find at Hougu Mound Tomb No. 1, 1.5 km southeast of the site, was a set of chime bells inscribed "Fanzi chen Zhou". This inscription confirmed the existence of the state of Fan, which some scholars had doubted. The bells are not kept at the site itself.