Lorule

Lorule is a location from The Legend of Zelda: A Link Between Worlds. It is a dark parallel world to Hyrule, and shares the same basic geography. It is ruled by Princess Hilda. Lorule is accessed through cracks in surfaces that link Lorule and Hyrule together.

Story
Prior to the events of A Link Between Worlds, Lorule was a stable world similar to Hyrule. However, Lorule suffered through its own civil war (similar to the Hyrulean Civil War), and the Lorulean Royal Family was forced to destroy their Triforce, believing it to be a means to end their strife. However, it instead caused their kingdom to crumble and fall apart even more.

Princess Hilda, concerned with the future of Lorule, plotted with Yuga to abduct the Seven Sages as well as Princess Zelda and revive Ganon (then long deceased from his defeat in The Legend of Zelda: A Link to the Past) so they could gain Hyrule's Triforce, believing it to be key to saving the kingdom. Ravio, a long time servant of Princess Hilda's, refused to participate and fled. Secretly, however, Yuga had no intention of saving Lorule, but rather use the Triforce to become a god and remake Lorule into his own image. After Yuga was defeated and Link and Zelda returned to Hyrule, taking pity on Hilda for her efforts in restoring the kingdom, the two used their Triforce to wish for the restoration of Lorule's Triforce, causing the black clouds covering the sky to part.