Belinsk Opera House is a location in Belinsk, introduced in Golden Sun: Dark Dawn. Its main game purpose is after the activation of the Luna Tower and the Grave Eclipse occurs. The summon Crystallux can be found here after defeating a Dark Devourer and two Dark Scuttlers. However after the party leave Belinsk, the Opera House cannot be entered again.
The Opera House is a symbol of Morgal's love of music. It has long been rumored to be home to a chandelier-shaped dragon with a love of music.
During the Grave Eclipse, Belinsk's soldiers corral a group of monsters into the Opera House. Led by Volechek, king of Morgal, the soldiers enter the building to investigate. This scene appears as a vision to Volechek's sister, Sveta, a member of Matthew's group. The group goes to investigate, and find that all the soldiers have been killed by the monsters, with Volechek nowhere to be found. However, Matthew notices three monsters attacking a young girl attempting to protect the Opera House's dragon, Crystalllux. Matthew attacks and defeats the monsters, but is too late to save the girl. Crystallux joins Matthew as a Summon, and the Adepts take time to bury the victims before leaving to head to Belinsk's port.