Nikaia or Nikea (Greek: Νίκαια) is a suburb in the west southwestern part of Athens, Greece. The mountaintop of the southern part of Aigaleo lies to the north. It is also locate SE of Eleusis and GR-9, SW and W of Kifissou Avenue (GR-1/E75, W of Thivon Avenue, about 8 km WSW of Athens, WNW of Poseidonos Avenue and Syngrou Avenue and about 4 km N of downtown Piraeus. The city has main streets including Gregori Lambraki Street and Petrou Ralli Street that is divided into two way roads which is also linked.