Golshan tower is located in Khosh Abad village at a distance of 19 km Famenin city in Hamadan province. The tower appointed to the Gulshan brothers and is made in the late Qajar with 4 floors.
Bottom floor of the tower was a prison, the top floor was a guard tower and it was for security of village and medial floors has been used to reside.
The historical Khosh Abad village has an ancient mosque.
This building dates back to the Qajar period too. Ancient Mosque Of Khosh Abad is one of the most beautiful monuments in Famenin city.