The town hugs the base of a striking outcrop of rock, the summit of which bears a fourteenth century castle. The name of the town itself is derived from the Latin word Saxum, meaning rocky place. The castle is heavily fortified with battlements and towers; it is an impressive landmark by day or by night, when it is lit up. An enormous snow well was built in the rocks in the 17th Century, it was used to store snow to provide the town with water in the summer months.

Sax is situated next to the N330 motorway which runs straight into Alicante, 32km away.

The nearest golf course is Alenda Golf Club, 15km away.
Shops and other amenities are adequate, the large urban centres of Elda and Petrer are 11km away.