The ruins and remnants of once-mighty nations lie scattered across the lands of Faerūn. Hidden within the dusty vaults and passages of these crumbling monuments, great treasures and terrible dangers await discovery. Only those bold explorers armed with courage and equipped with knowledge dare to delve into these earliest secrets of the Forgotten Realms setting. For the first time, the secrets of past empires of the Forgotten Realms world are chronicled in one comprehensive sourcebook. For players, this book contains new options for characters wishing to delve into ancient ruins, including new feats, prestige classes, magic, and equipment. For Dungeon Masters, this book contains new material associated with ruins, including rules for how to build and sustain a ruin-based campaign, more than a dozen detailed adventure sites with maps, monsters and artifacts. Lost Empires of Faerūn contains five new in-depth prestige classes, 16 new feats, and 29 new monsters