Castlesteads is an Iron Age promontory fort, situated on the east bank of the River Irwell on a natural promontory in Bury, Greater Manchester (grid reference SD79691299). It is listed as a Scheduled Ancient Monument. Excavated pottery indicates the site was occupied between 200BC and 250AD.

• Scheduled Monuments in Greater Manchester

53°36′46″N 2°18′25″W / 53.612875°N 2.306955°W / 53.612875; -2.306955