The Halcyon can be found on Halcyon Island, and unlocks at level 20.
The first time you upgrade the Halcyon you will need a variety of items. To make further upgrades, you will need to complete quests. The Halcyon can be upgraded three times.
To learn more about the Halcyon, check out the guides on our official Facebook group.
For more information on crafting, crafting stations, and buildings, check out the Crafting Stations section.