Reverse Mountain is a mountain at one of the points where the four Blues meet and is one of the two known entrances to the Grand Line. This place is unique in that rivers from the Blues flow up the mountain, meet at the top, and then flow down into the Grand Line. This is due to the fact that the mountain, being a "Winter Island" using Grand Line terminology, is much colder than the surrounding sea in the Blues but not in the Grand Line. Many pirates entering the Grand Line die before they can even go up the mountain, because the hostile water currents and storms force them to crash into the mountain walls. On the rivers' borders are several gates built by an unknown hand.
Moderated By: Trainee Narrator, Narrator, Global Moderator

The Holy Land of Mariejois is the capital of the World Government and serves as another gateway to the Grand Line. The Government's HQ is there and the Council of Kings meets here.
Moderated By: Trainee Narrator, Narrator, Global Moderator

Fishman Island is an underwater island which dwells 10,000 meters under Mariejois, in a giant hole that goes under the Red Line. It serves as an underwater gateway to the New World for those who do not wish to cross over the Red Line above. It is the home of the Fishmen and some Merfolk. It is literally directly under the seat of power of the World Government.
Moderated By: Trainee Narrator, Narrator, Global Moderator