Troia (トロイアのまち,Toroia no machi?), also known as Toroia, is a city in Final Fantasy IV, and home to the Crystal of Earth. Troia is a primarily matriarchal society, where eight female Epopts operate as the town leaders. Women fill other primarily "male" roles as well, such as being the guards, soldiers, doctors, and shopkeepers of the castle and its village. The castle contains a treasure room, and permission is needed to access it. There is also an infirmary.
In the town, there is a Black Chocobo Nursery and the King's Bounty Pub. The Chocobo Nursery breeds Black Chocobos; however, they cannot fly. The King's Bounty Club requires a Member's Writ to enter. In the club the player can watch a half dozen girls dance, much to the party leader's embarrassment. In the DS version, the Gil Farmer Augment can be found in the changing room. In The After Years the Queen's Whip, required for the "Call Me Queen" Band, can only be acquired from Troia during Palom's Tale.
Cecil, Tellah, Yang, and Cid arrive in Troia to capture the Earth Crystal to trade it for Rosa, whom Golbez has taken captive, but find out the Dark Elf has already stolen it. They visit Edward in the castle infirmary, and he gives them the Whisperweed to help them find the Crystal.
After defeating the Dark Elf, Cecil and his friends return to Troia and are immediately contacted by Kain, who is ready to trade Rosa for the Crystal at the Tower of Zot.
Palom is sent to Troia to help train Leonora in the arts of Black Magic, and head to the Tower of Trials to train her. Upon returning, Leonora is entrusted with the crystal, and both Palom and Leonora are forced to escape from Troia to the Lodestone Cavern.
Izayoi, in Edge's tale, heads to Troia to find out what is going on with the war, and then escape through the Tower of Trials and head back to Eblan. In the final tale, the party heads to Troia to find it frozen over. They head to the Lodestone Cavern to retrieve the Earth Crystal, and after defeating Shiva, return to a thawed Troia to return it.
Troia has its own eponymous theme as a background music. In the GBA version, the theme is also played during Edge's Lunar Trial. An arrangement of the theme is included on the Final Fantasy IV: Celtic Moon album.