In every town is a NPC called Warper.

The Warper warps you in Dungeons, to Instances, Illusion Dungeons, Towns, Special Areas and Guild Castles.
If you want to warp in a deeper Dungeons/Fields you need a World Tour Ticket (GemCoin Shop / Eden Coin Shop) OR Nyangvine Fruit (Cash Shop).

How to use World Tour Ticket / Nyangvine Fruit?

You have to open the World Map.

Choose the Dungeon/Field you want to go.

Click on move.

Choose the item you want to use for teleport.