Island Hideaway Structures
There are three building categories for the Island Sanctuary. They are "Cabin & Fields", "Processing Facilities", and "Landmarks".
Cabin & Fields
Cabins
The hideaway can have one Cabin (unlocked at Sanctuary Rank 1). The Cabin allows players to buy various items for 
and 
, as well as selling some of the gathered items for those currencies.
Upgraded Cabins unlock upgrades for the Pasture and Cropland.
| Building | Unlock Rank | Build Time | Island EXP | Materials |
|---|---|---|---|---|
 Cozy Cabin I |
1 | None | 750 |
10 |
 Cozy Cabin II |
4 | None | 1,755 |
10 |
 Cozy Cabin III |
7 | None | 2,565 |
10 |
Cropland
The hideaway can have one Cropland (unlocked at Rank 2). Upgraded Croplands provide additional plots for produce, and allows automation at upgrade III.
| Building | Unlock Rank | Build Time | Island EXP | Materials |
|---|---|---|---|---|
| Cropland I | 2 | None | 0 | Free |
| Cropland II | 4 | 2 hours | 0 | 1,000 Seafarer's Cowries
|
| Cropland III | 7 | 4 hours | 0 | 1,500 Seafarer's Cowries
|
Pastures
The hideaway can have one Pasture (unlocked at Rank 2). Upgraded Pastures hold additional animals, and allows automation at upgrade III.
| Building | Unlock Rank | Build Time | Island EXP | Materials |
|---|---|---|---|---|
| Pasture I | 2 | None | 0 | Free |
| Pasture II | 4 | 2 hours | 0 | 1,000 Seafarer's Cowries
|
| Pasture III | 7 | 4 hours | 0 | 1,500 Seafarer's Cowries
|
Processing Facilities
Workshops
The hideaway can have a maximum of 3 Workshops (as early as Rank 5). Upgraded Workshops increase the value of their handicrafts.
| Building | Unlock Rank | Build Time | Island EXP | Materials |
|---|---|---|---|---|
 Workshop I |
3 | None (first) 1-2 hours (others) |
1,425 |
10 |
 Workshop II |
6 | 6-7 hours | 2,300 |
15 |
 Workshop III |
8 | 11-12 hours | 2,760 |
15 |
Granaries
The hideaway can have a maximum of 2 Granaries (as early as Rank 5). Upgraded Granaries yield more Rare materials from expeditions.
| Building | Unlock Rank | Build Time | Island EXP | Materials |
|---|---|---|---|---|
 Granary I |
5 | 1-2 hours | 1,425 |
10 |
 Granary II |
6 | 6-7 hours | 2,300 |
15 |
 Granary III |
8 | 11-12 hours | 2,760 |
15 |
Landmarks
The hideaway can have a maximum of 4 Landmarks (as early as Rank 9). Note that the Water Otter Fountain is not required to fill all Landmark slots.
Each contructed landmark increases the maximum Workshop Groove.
| Building | Unlock Rank | Build Time | Island EXP | Materials |
|---|---|---|---|---|
 Quixotic Windmill |
3 | 11-12 hours | ?? |
15 |
 Towering Tree Fort |
3 | 11-12 hours | ?? |
15 |
 Boiling Bathhouse |
5 | 11-12 hours | 1,995 |
15 |
 Lominsan Lighthouse |
9 | 11-12 hours | 2,460 |
15 |
 Water Otter Fountain |
9† | 11-12 hours | ?? |
15 |
† A Water Otter Fountain Permit is required for the construction of the Water Otter Fountain.
This permit can be obtained from the Horrendous Hoarder in The Cozy Cabin in exchange for the following items (from Level 90★★★ Expert Crafting, requires Master Recipes X books):
| Items Required for Turn in | Crafted by | Materials to Craft 2x Items |
|---|---|---|
2  Water Otter Fountain Hardware |
   |
|
2  Water Otter Fountain Resin |
  |
|
2  Water Otter Fountain Lumber |
   |
2 |
References