Egyptian sun temples were Ancient Egyptian temples to the sun god Ra. The term has come to mostly designate the temples built by six or seven pharaohs of the Fifth Dynasty during the Old Kingdom period. These sun temples were built in two localities, Abu Gorab and Abusir, both within 1 km (0.62 mi) of each-other and around 15 km (9.3 mi) south of modern-day Cairo. Of the six or seven temples built, only two have been uncovered: that of Userkaf and that of Nyuserre Ini. Both are now in ruins, although the temple of Nyuserre still holds impressive remains, in particular its central altar piece.