Chios is a Greek island on the eastern part of the Aegean Sea.  It is just a few kilometers off the coast of Turkey, close to the city of Cesme (80 Km west of Izmir or Smyrna) .  It's a fairly big island. The capital is also called Chios or Chora. 

Chios is not famous for its nightlife but rather for relaxing vacation, its taverns serving fresh fish and traditional greek specialties,  the mastic tree which produces natural chewing  gum, and its hospitality.

Sightseeings:
Byzantine monastery of Moundon, near Diefha.
Daskalopetra (the teacher's stone) where Homer taught.
Nea Moni monastery.
The midieval villages Mesta, Pyrgi etc
The stalactite and stalagmite cave near Olympoi
The remnants of the prehistoric settlement in Emborios (or Emporios)
Byzantine museum of Chios (Medjitie Mosque)

Close by (you can travel by ferry to):
Lesbos or Mitilini, Samos, Cesme in Turkey