Pokemon Brilliant Diamond and Shining Pearl will feature a brand new post-game area in which players can catch Legendary Pokemon. Earlier today, The Pokemon Company officially revealed Ramanas Park, a new area that players can access in Pokemon Brilliant Diamond and Shining Pearl after they enter the Hall of Fame by becoming champion of the Sinnoh region. The new area contains several rooms with pedestals. When players put special slates into the pedestals (and each slate looks like either a Game Boy or Game Boy Advance cartridge), it will trigger the appearance of different Legendary Pokemon. 

Your Sinnoh adventure is about to get Legendary, Trainers.Introducing Ramanas Park, an expansive new facility where you can encounter a variety of Legendary Pokémon!#PokemonBrilliantDiamond and #PokemonShiningPearl arrive on November 19!💎✨ https://t.co/jPpx2uCFcZ pic.twitter.com/IG7dbG1M7p