The Queen's Gate

The Queen's Gate(クイーンズゲイト) is an interdimensional portal that when activated, allows its user to travel through to other dimensions, regardless of time and space. However, when used incorrectly, it can cause many dimensions to merge, allowing entities from different eras and points of time to integrate. While its powers are still unknown, it is generally agreed that the the Queen's Gate only be controlled by highly intelligent beings, who are able to decipher and process the inner workings of the device. Alice's mother, Lewis, originally found the gate and accidentally caused an interdimensional collision while attempting to travel through it.

The creators of the Queen's Gate are currently unknown.

According to Setra's comments in the Perfect Book, it is a treasure hailing from Amara.

Users of the Queen's Gate

 * Alice
 * Lewis

Trivia

 * The Queen's Gate is explicitly referenced in the Queen's Gate novels and in Queen's Gate: Spiral Chaos. However, it is only implied in the Queen's Gate combat books.
 * The gate in the Queen's Blade: Rebellion vs. Hagure Yuusha no Estetica omake may be a Queen's Gate.
 * The Queen's Gate has a resemblance with the Cross Gatesfrom both Super Robot Wars Alpha 3 and the Endless Frontier series. This is justified, since Banpresto developed both Queen's Gate: Spiral Chaos and the Super Robot Wars series.
 * The gate itself has a resemblances to a Stargate from Stargate SG-1, Stargate Atlantis, and Stargate Universe.