Looking Glasses

Looking Glasses are magical transportation devices featured on ABC's Once Upon a Time. One first appears in the seventeenth episode of the first season. The second appears in the second episode of the second season.

Before the Curse
In a desperate attempt to get rid of her mother and escape her unwanted marriage to King Leopold, Regina uses Cora's spell book to summon Rumplestiltskin. He gives her a looking glass, instructing her to push Cora in if she never wants to see her again. On the day of her wedding, Cora visits Regina and immediately recognizes the looking glass. Regina lunges forward trying to push her through the looking glass. She tells Regina that she is not so easily disposed of and suspends her in magic; however Cora underestimates her daughter. With encouragement from Rumplestiltskin in the looking glass, Regina breaks free from Cora's spell and pushes her into the portal. Cora lingers for a moment, then vanishes and the looking glass shatters.

Years later, when the Evil Queen travels to Wonderland with Jefferson to get her father back from her mother, the Queen of Hearts, they pass through a looking glass in the Portal of Doors into Wonderland. After she finds her father in a box in her mother's vault, the three are chased by the Queen of Hearts' soldiers back to the looking glass. Regina feeds her father a piece of the Caterpillar's mushroom restoring him to his normal size, and father and daughter go back through the looking glass leaving the Mad Hatter behind.

Trivia

 * It can be assumed that all looking glasses outside the portal doors are available for one use only.
 * The looking glasses are inspired by the sequel to Alice in Wonderland called Through the Looking-Glass, and What Alice Found There. 

Appearances
Specchi