Biomes

Biomes help decide which maps are worth investing in, which Atlas points matter for a route, and when a map can support a stronger Tablet setup. City maps are the first major target because they can use an additional Tablet and they are tied to Citadels, Halls, and Pinnacle fragment progression.

Guide Summary

Area	Notes
Main goal	Use biome information to choose better Atlas paths and farming targets.
First target biome	City maps
Best City payoff	Fourth Tablet with Industrial Improvements
Important City targets	Vaal City, Ezomyte City, Faridun City, Patriarch Halls, and Matriarch Halls
Related farm	Fragments

Overview

Biomes are map-area categories on the Atlas. They matter when the main Atlas tree adds rewards or mechanics to specific area types, such as City, Mountain, Forest, Grass, Desert, Swamp, or Water.

The value of a biome depends on the strategy. City maps are usually premium targets because Industrial Improvements allows an additional Tablet on City Maps, and several City routes point toward Citadel or Hall content that feeds Pinnacle boss progression.

Cities

City maps are high-value Atlas targets. Use them for expensive Tablet setups, Citadel pathing, Hall pathing, and strategies that benefit from extra City Atlas points.

How to Locate Cities

Atlas signal	What it points toward	How to confirm
Red beam	Vaal City	The beam comes from a Stone Citadel.
Blue beam	Ezomyte City	Follow the beam. If it leads to an Iron Citadel, the City is Ezomyte.
Blue beam	Faridun City	Follow the other blue beam. If it leads to a Copper Citadel, the City is Faridun.
Thick orange beam without swirls	Patriarch Halls or Matriarch Halls	Path toward the beam when farming Origin Spark or Origin Cradle for Arbiter of Divinity access.

City Types and Targets

City or target	Associated boss or content	Main use
Vaal City	Stone Citadel	Hunt Doryani and Ancient Crisis Fragment for Arbiter of Ash access.
Ezomyte City	Iron Citadel	Hunt Count Geonor and Weathered Crisis Fragment for Arbiter of Ash access.
Faridun City	Copper Citadel	Hunt Jamanra and Faded Crisis Fragment for Arbiter of Ash access.
Patriarch Halls	The Lightless Patriarch	Farm Origin Spark for Arbiter of Divinity access.
Matriarch Halls	The Lightless Matriarch	Farm Origin Cradle for Arbiter of Divinity access.

City Atlas Points

Atlas point	Verified effect	Use
Industrial Improvements	An additional Tablet may be used on City Maps.	Core City point for high-investment farming.
History of the Ezomytes	Ezomyte Cities are also considered Grass Areas and Swamp Areas.	Use when the Grass or Swamp biome bonus supports the current farm.
History of the Faridun	Faridun Cities are also considered Desert Areas and Mountain Areas.	Strong for Tablet farming when Mountain Mastery is set to Tablet quantity.
History of the Vaal	Vaal Cities are also considered Forest Areas and Water Areas.	Use when Forest or Water bonuses match the target strategy.
Dread Lieutenants	Rare Monster Packs in City Areas have a 75% increased chance to have an Additional Rare Monster.	Good for rare-monster, rarity, and monster-value setups.
Urban Sprawl	6% increased Pack Size in City Areas.	General City value when extra density is useful.
Bring Me Your Leader	Summoning Circles in City Areas have 5% chance to instead summon a random Citadel Boss.	Citadel-boss upside for City routes with Summoning Circles.
Warring Survivors	City Areas have a 20% chance to be Invaded by another faction.	Enables invaded-City setups.
Warlord’s Vendetta	Invaded Cities have a 20% chance to include an invading Citadel Boss fighting the Map Boss.	Adds Citadel-boss upside to invaded Cities.
Guild Craftsmen	Humanoids have 30% increased chance to drop Exceptional Items in City Areas.	Optional City loot point when the route already passes nearby.
Serle’s Legacy	Ezomyte Cities contain a Summoning Circle.	Supports Ezomyte City routes that want Summoning Circle content.
Hope in Despair	Faridun Cities contain an additional Shrine.	Optional Faridun utility.
Monuments in Time	Vaal Cities contain an additional Essence.	Optional Vaal City value when Essence content is useful.

Good City Strategies

Strategy	City setup	Notes
Fourth-Tablet farming	Allocate Industrial Improvements, then run valuable City maps with four Tablets.	Best when the Waystone and target content justify spending the extra Tablet.
Fragment farming	Path toward Citadels, Patriarch Halls, and Matriarch Halls.	Citadel bosses and Hall bosses can drop Pinnacle fragments. With the right fragment-farming setup, these bosses can drop more than one fragment.
Arbiter of Divinity unlock	Farm or buy Origin Spark and Origin Cradle, then rerun Arbiter of Divinity.	Running Arbiter of Divinity 5 times unlocks the full main Atlas tree. The first run comes through initial progression; runs 2 through 5 use drops from the Matriarch and Patriarch.
Faridun Tablet overlap	Take History of the Faridun, set Mountain Mastery to Tablet quantity, and use Faridun Cities as Mountain Areas.	Combines City fourth-Tablet value with Mountain Tablet quantity.
Ezomyte biome overlap	Take History of the Ezomytes when Grass or Swamp bonuses support the farm.	Useful when a City strategy also wants the secondary biome bonus.
Vaal biome overlap	Take History of the Vaal when Forest or Water bonuses support the farm.	Useful when a City strategy also wants the secondary biome bonus.

Waystones and Tablets

City maps can absorb more investment than normal maps when Industrial Improvements is active. Save the fourth Tablet for maps with a real payoff: a Citadel, a Hall route, a strong mechanic target, or a Waystone that already has valuable modifiers.

Setup choice	Recommendation
Tablets	Use four Tablets only on City maps that justify the extra cost.
Waystones	Prefer strong Tier 15 or higher Waystones when the City target is tied to fragments, bossing, or an expensive mechanic farm.
Route planning	Follow beam targets first, then decide whether the revealed City is worth full Tablet investment.

Rewards and Progression

Reward or unlock	Source	Notes
Ancient Crisis Fragment	Stone Citadel	Used for Arbiter of Ash access.
Weathered Crisis Fragment	Iron Citadel	Used for Arbiter of Ash access.
Faded Crisis Fragment	Copper Citadel	Used for Arbiter of Ash access.
Origin Spark	Patriarch Halls	Used with Origin Cradle for Arbiter of Divinity access.
Origin Cradle	Matriarch Halls	Used with Origin Spark for Arbiter of Divinity access.
Main Atlas tree completion	Arbiter of Divinity	Complete Arbiter of Divinity 5 times to unlock the full main Atlas tree.

Common Mistakes and Tips

Mistake	Better approach
Spending four Tablets on every City map.	Save the fourth Tablet for strong Waystones, Citadel routes, Hall routes, or valuable mechanic targets.
Treating every blue beam the same.	Confirm the Citadel type: Iron points to Ezomyte City, and Copper points to Faridun City.
Ignoring thick orange beams.	Use thick orange beams without swirls to locate Patriarch Halls or Matriarch Halls for Arbiter of Divinity fragments.
Forgetting the internal fragment setup.	Use the Fragments guide when setting up Waystones, Tablets, and Atlas Master points for Pinnacle fragment drops.

Sources and Patch Notes

This guide is written for Path of Exile 2 patch 0.5.

• POE2DB Masters of the Atlas
• POE2DB Pinnacle Keys
• POE2DB Tablets