Eden ( location ) Eden , known as the " Seat of the Sanctum " , is the capital city of Cocoon in " Final Fantasy XIII " . Named after its patron fal ' Cie of the same name , it serves as the center of Cocoon ' s governing body , the Sanctum . Eden floats in the sky high over Cocoon and thus can only be reached by airship or a railway connected to Palumpolum . Eden comprises the game ' s twelfth chapter . Datalog . " This city , Cocoon ' s capital , shares its name with its fal ' Cie patron . Host to the world ' s centers of culture and government , it functions as the heart of human society on Cocoon . " " At the city ' s core rises the monumental Edenhall , seat of the Sanctum ' s administration . The fal ' Cie Eden dwells deep within the structure ' s interior . " Story . " Final Fantasy XIII " . Lightning believes the fal ' Cie Eden is manipulating the Sanctum and responsible for the Purge and all of the misfortune that has befallen her . She and Hope Estheim thus attempt to reach Eden and exact revenge . When the pair reaches Palumpolum , Hope ' s observation that the fal ' Cie treat humans " like pets " causes Lightning to realize the life she had under the fal ' Cie ' s care was meaningless , and that her plan for revenge is petty and foolish . The party discovers it is not Eden , but the Sanctum ' s Primarch Galenth Dysley , who is manipulating the Sanctum , and that Dysley is a disguised form of the fal ' Cie Barthandelus . Eden houses the fal ' Cie Orphan , whose destruction is the party ' s " true " Focus . Because Orphan powers Cocoon ' s infrastructure and its death would equate to Cocoon ' s destruction , the party attempts to flee to Gran Pulse to avoid their Focus , even knowing that the consequence is transforming into Cie ' th . Barthandelus draws them back to Eden by inciting political and military uproar , chiefest among which is convincing the Cavalry that Orphan is the mastermind behind the recent Pulsian threats . This forces the party to return to thwart the misguided Cavalry and put an end to Barthandelus once and for all . The party returns to Eden amid a grand prix race , and summons their Eidolons . Rygdea and the Cavalry storm Cid Raines ' s office and assassinate him , and the building explodes . The fal ' Cie summon Pulsian wildlife from the Fifth Ark and the oretoises and behemoths storm the capital . Yaag Rosch deploys PSICOM to fight the Pulse invasion , their target also to capture the rogue l ' Cie . The party makes their way through the chaos , meeting NORA on the way . NORA help the civilians while the party continues onward towards Orphan . They fight Yaag Rosch in his " Proudclad , " but convince him they are on the same side . Rosch commands the PSICOM forces to abandon the l ' Cie operations , and instead help evacuate the civilians . He is attacked by King Behemoths , and detonates grenade simultaneously killing the monsters and himself . After Orphan ' s destruction , Eden loses power and large portions collapse . When Ragnarok appears above Eden the Pulsian wildlife is sucked into it . After Ragnarok crystallizes Cocoon , many citizens have evacuated from Eden , while being aided by PSICOM and Guardian Corps forces alike . The novel " Final Fantasy XIII - 2 Fragments After " reveals that Eden fell on Bodhum on the Day of Ragnarok . René is a 17 - year - old prodigy attending the university after skipping several grades and finishing high school in just over a year . Ever since losing her parents at a young age and growing up in a Sanctum - run orphanage in her hometown of Bodhum , René has been considered a genius by all who know her but she is a realist who considers dreaming of fantasies and believing in miracles to be " the height of stupidity . " Since childhood , she has always seen herself as superior to others as no one has been able to match her intelligence , and thus she sought to escape the orphanage . René aspires to become a member of the Sanctum and rise to a position that would allow her to participate in government operations and apply her knowledge of AMP technology . As she enters the library to view documents on AMP models , the announcement for the Purge of Bodhum has been made . Worrying about a junior school classmate she knew from the orphanage , René tries to distract herself by working . She begins developing theories and unconsciously types them in a open text file on a terminal , theories stating that the fal ' Cie don ' t care for human lives and allowed the population to grow to large numbers to fulfill a goal that required the loss of lives on a grand scale , and in the near future , humanity would be betrayed by their fal ' Cie protectors . When she comes to her senses and stops typing , a message flashes on the console , directing her to the upper levels . She descends the hallway and calls for the elevator when she realizes she forgot her ID card on the console panel . When René returns to the reading room to get her ID card , she notices she is the only one there . A metallic statue appears before her and proclaims its purpose to eliminate her . René realizes that since Cocoon ' s network terminals are under fal ' Cie control , they had read her theories and sent a report to a high - ranking fal ' Cie that someone there possessed dangerous thoughts . René ' s theories are too close to the truth , so the steel statue fal ' Cie was sent to exterminate everyone believed to have read them . The fal ' Cie opens its chest cavity , revealing the gears it used to kill the people in the room , and advances towards René . The elevator arrives , providing René with a distraction . She shoves a stool into the fal ' Cie ' s gears to stall it and bolts out the entrance doors . Evening is about to turn to dusk and René calls out for help to the few pedestrians still roaming the streets . A soldier belonging to the Homeguard tells them to go about their business so he can talk with René . She is about to tell the soldier everything when she hears a familiar sound of scratching gears coming from the soldier , another exterminator fal ' Cie in disguise . The revelation causes René to tremble with fear and leaves her too shocked to call out to anyone to her aid again as the fal ' Cie reaches towards her . Unbeknownst to René , at the same time , the Pulse fal ' Cie Anima has been defeated by a group of people within the Pulse Vestige in the Hanging Edge . The great energy wave it releases sweeps throughout Cocoon and the fal ' Cie feel its effects and cease to function , including the exterminator fal ' Cie . René escapes through the streets of Eden into the night . Unable to return home , René resolves to survive and find somewhere to hide under the fal ' Cie ' s radar . Around the time the Pulse l ' Cie begin their assault on the " Palamecia " to rescue Vanille and Sazh Katzroy , René has spent several days continuing to evade the fal ' Cie by escaping through the network of maintenance tunnels located beneath Eden . The maze of underground passages have no surveillance cameras , therefore leaving the fal ' Cie unable to pinpoint her location . As she hides from her fal ' Cie pursuers , René discovers her innate ability to play cat and mouse . The fal ' Cie tasked with killing René has been after her ever since the events at the library . Now she can run it them while taking the time to observe its actions and gain an understanding of its abilities . From watching how the fal ' Cie destroyed the stool she shoved in its gears before going after her , René knows she can escape while keeping a fair amount of distance from it . An aerial view of Eden is seen as an apocalyptic vista in the trial known as the Altar of Atonement in the Luxerion Cathedral . Creation and development . Eden , Hanging Edge and Sunleth Waterscape were the first locations to be revealed , shown in the E3 2006 trailer , albeit their names were unknown at the time . In the early development for " Final Fantasy XIII - 2 " , Eden , the great floating city of Cocoon , has collapsed to Lake Bresha that lies at the bottom of crystallized Cocoon . Later , a different concept to the Lake Bresha version , Eden has been collapsed on Gran Pulse , at Archylte Steppe . The scene was to be in the distant future where the ancient capital of Cocoon would have been covered by different kinds of plants , flowers and other vegetation . A certain was later used as a location in Serendipity in " Final Fantasy XIII - 2 " . Musical themes . " Start your Engines " and " Eden Under Siege " are the main tracks associated with Eden . " Eden Under Siege " has a new arrangement for " Dissidia Final Fantasy " arcade version . Other appearances . " Dissidia Final Fantasy " ( 2015 ) . Eden was one of the six default stages available in the initial arcade release . Taking place in the Expressway area , the stage is a long albeit narrow battlefield , and as such distance is key during battle . Midway through battle , parts of the Expressway are destroyed , and Crystal Dust begins to appear , reflecting Eden ' s destruction and Vanille and Fang ' s transformation into Ragnarok . " Theatrhythm Final Fantasy " . Scenes from Eden appear . Etymology . In the world of " Final Fantasy XIII " the city of Eden is named after its patron fal ' Cie .