Asgard

Asgard, the City of Ice is a location on Earth, it is considered to be the most coldest place on the planet and could possibly part of a region on either the south or north pole. It is completely made of ice, and is home to Princess Astrid and her people.

Society
Like many lands and planets in the magical dimension, Asgard is ruled by monarchy. So far, only the land's princess has been shown.

History
The land is considered a magical place and therefore, is affected by people's belief in magic. And so, when the Wizards of the Black Circle stole the magic from Earth, the city is then hidden from the people on Earth. After the events of the fourth season, the land reappears due to the return of magic.

Due to its inhabitants biological nature they are weak against any form of heat and so, for the safety of their citizens a rule was created to forbade anyone from leaving the city walls otherwise they will perish.

According to Bloom, the people of Asgard are known for their peaceful nature.

Comics

 * -|Season 5=

The city makes it first appearance in the comic, The Ice Princess, where it is revealed to have been hidden from people until the belief in magic returned. Princess Astrid had fallen in love with a human and was desperate to see him and so she took off to Gardenia, breaking one of the sacred laws of her land: to never leave the city walls or face death from heat.

Icy had saved the melting Astrid and manipulated her broken heart to freeze the Earth so that she can be with her lover. Due to the major imbalance of the Earth's global temperatures the Winx head for the city. They engage in a battle with the Trix and Astrid, that is until Astrid realized the Trix were just using her and stops listening to them. They leave but Astrid remains heartbroken until the Winx help her reunite with Andy and the two make a promise to see each other whenever possible.