Genshin Impact has released a new location called the Nostoi Region, where you can find nine Hydroculus. These can help you level up the Statue of The Seven in Fontaine and earn special rewards. However, note that some of the Hydroculus in the Nostoi Region are located in the underwater Faded Castle, which is locked behind a quest.
Therefore, you must first complete The Shadow Over Petrichor World Quest to gain access to all its areas. This article will showcase the locations of all nine Hydroculus in Genshin Impact's Nostoi Region.
You can find the first Hydroculus on top of a house near the Petrichor town entrance in Genshin Impact. You can climb its roof from behind or use Zhongli, Kazuha, or Wanderer.
Teleport to the waypoint near Petrichor town and head east. You will find the second Hydroculus above a pillar hidden behind a tree.
You can find the last Hydroculus in Petrichor at the top of the mountain northeast of the town. Using characters like Xianyun, Wanderer, and Kazuha is advised to save stamina and climb faster.
Teleport to the west waypoint on the middle level of the underwater Faded Castle. Head east and pass through the hallway until you reach the stairs that go up. Take the first left and keep moving ahead to find a mysterious bookshelf.
Use the power of the music box to pick up the Lost Grimoire and place it on the bookshelf to open it and collect the Hydroculus. While you're at it, you can also collect the Exquisite Chest, which is worth five Primogems in Genshin Impact.
After collecting the Hydroculus from the previous entry, head straight and climb the stairs. As soon as you reach the top, jump down to your right and dive into the water to find another Hydroculus.
Get out of the water and head east towards
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