Xibalba

Persona 2: Innocent Sin
Adolf Hitler wanted to raise Xibalba so that he can create the perfect Dictator-State in Sumaru City.

History
In Maya mythology, Xibalba, roughly translated as "Place of fear", is the name of the underworld, ruled by Mayan spirits of disease and death. In the 16th-century Verapaz, the entrance to Xibalba was traditionally held to be a cave in the vicinity of Cobán, Guatemala. To some of the K'iche' descendants of the Maya people living in the vicinity, the area is still associated with death. Cave systems in nearby Belize have also been referred to as the entrance to Xibalba. Another physical incarnation of the road to Xibalba as viewed by the K'iche' peoples is the dark rift which is visible in the Milky Way.

Ameno Torifune
According to Atlus, "Ame no Torifune" is the name of the god that takes your soul to Heaven at death, who also serves as a messenger for the gods (like Hermes). It also seems to be a vehicle that the gods ride. A fune is a ship.