Travel to Mor Dhona and speak with the Miqote NPC named Koh Rabntuh to start a quest called “Delve Into Myth”. Upon completing this quest, the Eureka Orthos deep dungeon will officially unlock.

Final Fantasy XIV patch 6.35 adds Eureka Orthos, a new deep dungeon located in Mor Dhona. Our guide explains how to unlock Eureka Orthos how it’s different.

The Color Dungeon returns in the Nintendo Switch remake of Link's Awakening, but it's easy to miss. Our quick guide walks you through the steps to reach it.

This guide breaks down everything you need to know when it comes to unlocking the Origenics dungeon in FFXIV Dawntrail.

Below you can see a complete list of all the optional dungeons in FFXIV, along with the side quest needed to unlock them, where to find the NPCs, and other prerequisites they may have.