Exploration is the process of preparing land for future development. After advancing a level, more pieces of land (regions) become available for exploration, marked by a lesser cloud cover. When this happens, the player can choose to explore the land.
There is a charge to explore the land, measured in coins. Each exploration will cost more coins than the previous one as the game goes on. It also takes time to explore a piece of land, and each exploration takes longer as the game goes on. An exploration can be finished sooner by spending some gems.
Sometimes, exploring a region is a quest that must be fulfilled.