Through the Looking-Glass, and What Alice Found There (also known as Alice Through the Looking-Glass or simply Through the Looking-Glass) is an 1871 novel^[1] by Lewis Carroll and the sequel to Alice's Adventures in Wonderland (1865). Alice again enters a fantastical world, this time by climbing through a mirror into the world that she can see beyond it. There she finds that, just like a reflection, everything is reversed, including logic (e.g. running helps you remain stationary, walking away from something brings you towards it, chessmen are alive, nursery rhyme characters exist, etc.).

Through the Looking-Glass includes such verses as "Jabberwocky" and "The Walrus and the Carpenter", and the episode involving Tweedledum and Tweedledee. The mirror above the fireplace that is displayed at Hetton Lawn in Charlton Kings, Gloucestershire (a house that was owned by Alice Liddell's grandparents, and was regularly visited by Alice and Lewis Carroll) resembles the one drawn by John Tenniel, and is cited as a possible inspiration for Carroll.^[2]