Virgo is an earth sign, signifying stability, solidarity, and practicality.
According to Wikipedia:
Virgo constellation depicts Astraea, the virgin daughter of the god Zeus and the goddess Themis. Astraea was known as the goddess of justice, and was identified as this constellation due to the presence of the scales of justice (Libra) nearby, and supposedly ruled the world with her wise ways until mankind became so callous that she returned to the skies, disgusted. Virgo is also identified with Persephone, daughter of Demeter (goddess of agriculture and guardian of marriage). Persephone was the goddess of innocence and purity, then later on became the Queen of the Underworld, when she was abruptly snatched away by Hades
Virgo is compatible with Taurus and Capricorn, its sibling earth signs.