Proving Grounds

Overview

Originally an underwater natural museum of Rapture, with the discovery of ADAM and creation of Little Sisters and Big Daddies, the entire location was converted into the Big Daddy Proving Grounds, where the Protectors are trained in the defence of the gatherers. The building is topped with a dome and is the highest building in Rapture.

The winding hallways are spotted with fresh corpses from which Little Sisters gather ADAM while Big Daddies protect them. Jack must follow a Little Sister to proceed through specially locked doors to get to Fontaine. To Tenenbaum's chagrin, the little sisters remember their training well, and stop to harvest ADAM several times before leading Jack on.