Barrier (Super Mario Odyssey)

Barriers are four solid circular objects that appear in the Snow Kingdom in Super Mario Odyssey. They are dark green with a Bowser symbol on them. Barriers can be removed by collecting main Power Moons from four nearby sub-areas. When the Power Moon is collected, one of barriers opens up. After all four barriers are removed, they never appear again.

Required Power Moons
The following Power Moons are requires to remove the barriers:
 * The Icicle Barrier
 * The Ice Wall Barrier
 * The Gusty Barrier
 * The Snowy Mountain Barrier