Darkar's Fortress

It was Lord Darkar's fortress in Season 2 and the home for the Trix as well. Darkar's fortress was difficult to enter, let alone approach, because it was guarded by the Shadow Monsters of the Under Realm. These guards were under Lord Darkar's command and because of the intense negative force found there, as well as the lack of sunlight, weakens creatures living on the surface. When the fake Professor Avalon kidnapped Bloom, the remaining Winx and Specialists launched an assault on the castle and were soon followed by two of the school directors and a Red Fountain teacher (Saladin sent Codatorta in his place). After Lord Darkar was defeated in the Realix Realm, most of Darkar's fortress was left in ruins. Despite this, Stormy suggested to Valtor that they should move there in Season 3. It was called as Darkar's Fortress/Darkar's Castle in the Rai version and Shadowhaunt in the 4Kids version.