The Fuego Ironworks (Japanese: タタラせいてつじょTatara Ironworks) is a location in Sinnoh. Its motto is "Home to Molten Foundries." The building is owned by Mr. Fuego, a man who will give away a free Fire Stone to players who reach him in Pokémon Diamond and Pearl. In Pokémon Platinum, however, Mr. Fuego will offer the player four colored shards in trade for one Star Piece, one of each color (note that this can be repeated and thus Mr. Fuego can trade anytime should the player offer him a Star Piece). The interior of the building features spin tiles needed to navigate through the building.
The Fuego Ironworks was first mentioned in Double Team Turnover!, where Mars reported that the research on the Veilstone meteorites that was being conducted there had been completed, and that the Red Chain project was nearing completion.
Unlike in the games, the Fuego Ironworks in the anime is abandoned and shut down due to pollution. They have been infiltrated by Team Galactic and reactivated secretly to experiment on the Red Chain and Veilstone meteorites.
In the manga
In the Pokémon Adventures manga
Pearl came in the Fuego Ironworks after he rescued a baby Wingull near Floaroma Town. There, he made a shocking discovery when he found Team Galactic's logo on a piece of paper and heard a faint call for help from the inside. Soon, he met the wild Luxray he'd helped before, recognizing it by the broken claws. Soon diverting his attention back to the plea from inside, he got in with the Pokémon's help. Soon, they found Mr. Fuego, who explained the situation at hand through a glass wall he'd been trapped in since he overheard the Galactics' plan involving the Galactic Bomb. Just then, a bunch of Magby appear, and his Pokémon swiftly defeat them before he steps on one of the rigged floors and nearly dives straight for the melting pot.
Luxray, however, managed to save him just in time. After they defeat the Houndoom that was also released by Team Galactic to watch over Fuego, it joins his team and is named Rayler.