Genshin | Nostoi Region Guide

Nostoi Region is a place in Genshin Impact 4.6. See Nostoi Region, Fontaine, how to unlock, release date, map, location, and more!

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Nostoi Region - How To Unlock

Complete The Archon Quest Requirement

The Nostoi Region and its locations can be accessed when you complete the Prologue Act 3 Archon Quest: "Song Of The Dragon And Freedom". Once you do, the waypoint to the region will be unlocked!

Locations Are Unlocked By Progressing Quests

The different locations with the Nostoi Region are locked behind quest progression. In order to fully explore the region, you must complete the Canticles of Harmony Quest Line.

Nostoi Region - Locations

Petrichor Island

Petrichor Island is a small island found between the regions of Fontaine and Sumeru. It is where Petrichor Village can be found.

Petrichor Island Map

Faded Castle

The Faded Castle is a remnant of a past glorious kingdom. What was once a hall full of music is now drowning in silence.

Faded Castle Map

Sea Of Bygone Eras

The Sea Of Bygone Eras is home to the Undersea Capital, the Lost Homeland. Within its depths lies an old civilization that now lies dormant and forgotten.

Sea Of Bygone Eras Map

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Nostoi Region - Secrets & Puzzles

Nostoi Region Secrets

Secret	Description
Mysterious Grimoires & Bookshelves	Mysterious Grimoires are floating books that you can use your "Symphony" to catch. They can be found within the castle. Bring these Mysterious Grimoires to a bookshelf to unlock secrets.
A Ridiculously Common Branch	Find and locate 3 common branches and give it to Giovannie in Petrichor Island.
Pages From A Last Score	Restore the Damaged Score by locating the pages required for it.
Ancient Piece Of Paper	Ancient pieces of paper are tied to Juliano's Treasure Chests. Locate and collect all 4 of them!
Movements	Complete all of the movements in the Ancient Autoharmonic Music Box
Anecdota Septentrionalis Book	Complete all of the Books 1, 2 and 3.

Nostoi Region Puzzles

Puzzles	Description
The Might of Ancient "Symphony"	Unleash different type of shockwaves - Tap to create a Pause Soundwave that cause objects in an area to stop moving - Hold to create a Play Soundwave that will cause items in an area to move
Resonance of the Rhythm of Yore	Use the ancient Symphony to cause the soundboard to start sliding or to stop at a position. Find the correct note to complete the puzzle.
Washer Octopus	Interact with the blue Washer Octopus to make it approach the Allochromatic Anemones. You can do this with the use of your Symphony

Nostoi Region - Quests

Nostoi Region - Things To Do

1. Play Through The Canticles Of Harmony Quest Line

Since the locations in Nostoi region are closely tied with the Canticles Of Harmoney Quest Line, it's recommended that players complete that quest first to get full access to the region.

2. Unlock All Locations

Once you've unlocked all the locations, you can go ahead and unlock all of the waypoints within the region. Doing so will also unlock the achievement for it!

3. Collect All Hydroculus

The Nostoi Region will have its own set of Hydroculus for you to collect. Make sure to collect them all so you can further upgrade your Statue of the Seven in Fontaine.

4. Unlock The New Domain & Farm For Artifacts

The Domain in Petrichor Island is pretty easy to unlock. Simply go to its location and interact with it! This will allow you to farm for the new artifacts within it.

Artifacts Within The New Domain

Artifact	Description
Fragment Of Harmonic Whimsy	2-Piece Set Bonus: ATK +18% 4-Piece Set Bonus: When the value of a Bond of Life increases or decreases, this character deals 18% increased DMG for 6 seconds. Max 3 stacks.
Unfinished Reverie	2-Piece Set Bonus: ATK +18% 4-Piece Set Bonus: After leaving combat for 3s, DMG dealt increased by 50%. In combat, if no Burning opponents are nearby for more than 6s, this DMG Bonus will decrease by 10% per second until it reaches 0%. When a Burning opponent exists, it will increase by 10% instead until it reaches 50%. This effect still triggers when the equipping character is off-field.

5. Defeat The New Boss: Legatus Golem

The Praetorian Guard is a new world boss that can be found within the Nostoi Region. You can get it to it by progressing through the Canticles of Harmony quest line.

6. Defeat The New Local Legend Cineas

Cineas is a new Local Legend that can be found in the Nostoi Region. It's within the Sea Of Bygone Eras.

Fontaine Related Articles

Map & Puzzle Related

Fontaine
Fontaine
Fontaine Research Institute			Fortress Of Meropide
Erinnyes Forest			Morte Region
Sea Of Bygone Eras			Nostoi Region
Map & Collectibles
Hydroculus			Shrine of Depths
Fontaine Puzzles			Fontaine Quest
Local Specialties & Materials
Marcotte		Lumidouce Bell		Rainbow Rose
Tidalga		Beryl Conch		Romaritime Flower
Lumitoile		Subdetection Unit		-

Fontaine Domains

Artifact Domains

Domain	Key Drops
Denouement Of Sin
Faded Theater
Waterfall Wen

Talent Book Domains

Domain	Key Drops
Pale Forgotten Glory

Weapon Ascension Material Domains

Domain	Key Drops
Echoes of the Deep Tides

Weekly Boss Domains

Domain	Key Drops
Shadow of Another World

Fontaine Characters

Fontaine 5 Star Characters
Arlecchino	Clorinde	Emilie	Furina
Lyney	Navia	Neuvillette	Sigewinne
Wriothesley	-	-	-
Fontaine 4 Star Characters
Charlotte	Chevreuse	Freminet	Lynette
Other Fontaine Characters
Egeria	-	-	-

Other Fontaine Guides