ONE PIECE Episode 159: Onward, Crow! To the Sacrificial Altar!
Episode 159 of 1180 of ONE PIECE, aired July 6, 2003, 25 minutes. Available with English subtitles and dub where released.
Episode summary
Luffy, Usopp and Sanji finally enter Upper Yard, only to find out that the whole road is trapped heavily, but at last they arrive at the Ordeal Gates. Meanwhile Robin, Zoro, and Nami go out to explore Upper Yard while Chopper stays behind to guard the ship.