In some cosmologies, Gemini is associated with the Classical Element Air, and thus called a Air Sign (with Libra and Aquarius). Its polar opposite is Sagittarius.
Gemini includes two bright stars, named after the two twins, who correspond to the Dioscuri? in Greek mythology - Castor? (α), a pretty telescopic binary?, and Pollux? (β), which is brighter and more southwesterly. The other stars are relatively dim - only one, Alhena (γ) is ever seen from a large city - and trace out a rectangle to the southeast.