diff --git a/src/main/java/org/betterx/betterend/world/biome/land/ChorusForestBiome.java b/src/main/java/org/betterx/betterend/world/biome/land/ChorusForestBiome.java
index 1c90b50b..a9e5c9e8 100644
--- a/src/main/java/org/betterx/betterend/world/biome/land/ChorusForestBiome.java
+++ b/src/main/java/org/betterx/betterend/world/biome/land/ChorusForestBiome.java
@@ -40,6 +40,7 @@ public class ChorusForestBiome extends EndBiome.Config {
                 .feature(EndFeatures.CHARNIA_PURPLE)
                 .feature(EndFeatures.CHARNIA_RED_RARE)
                 .structure(BiomeTags.HAS_END_CITY)
+                .structure(EndStructures.ETERNAL_PORTAL)
                 .spawn(EndEntities.END_SLIME, 5, 1, 2)
                 .spawn(EntityType.ENDERMAN, 50, 1, 4);
     }
diff --git a/src/main/java/org/betterx/betterend/world/biome/land/DragonGraveyardsBiome.java b/src/main/java/org/betterx/betterend/world/biome/land/DragonGraveyardsBiome.java
index 6cbf7183..967720c0 100644
--- a/src/main/java/org/betterx/betterend/world/biome/land/DragonGraveyardsBiome.java
+++ b/src/main/java/org/betterx/betterend/world/biome/land/DragonGraveyardsBiome.java
@@ -2,10 +2,7 @@ package org.betterx.betterend.world.biome.land;
 
 import org.betterx.bclib.api.v2.levelgen.biomes.BCLBiomeBuilder;
 import org.betterx.bclib.interfaces.SurfaceMaterialProvider;
-import org.betterx.betterend.registry.EndBlocks;
-import org.betterx.betterend.registry.EndFeatures;
-import org.betterx.betterend.registry.EndParticles;
-import org.betterx.betterend.registry.EndSounds;
+import org.betterx.betterend.registry.*;
 import org.betterx.betterend.world.biome.EndBiome;
 
 import net.minecraft.world.entity.EntityType;
@@ -36,6 +33,7 @@ public class DragonGraveyardsBiome extends EndBiome.Config {
                 .feature(EndFeatures.SMALL_AMARANITA)
                 .feature(EndFeatures.GLOBULAGUS)
                 .feature(EndFeatures.CLAWFERN)
+                .structure(EndStructures.ETERNAL_PORTAL)
                 .spawn(EntityType.ENDERMAN, 50, 1, 2);
     }
 
diff --git a/src/main/java/org/betterx/betterend/world/biome/land/DryShrublandBiome.java b/src/main/java/org/betterx/betterend/world/biome/land/DryShrublandBiome.java
index 99f832a8..b672fc56 100644
--- a/src/main/java/org/betterx/betterend/world/biome/land/DryShrublandBiome.java
+++ b/src/main/java/org/betterx/betterend/world/biome/land/DryShrublandBiome.java
@@ -5,6 +5,7 @@ import org.betterx.bclib.interfaces.SurfaceMaterialProvider;
 import org.betterx.betterend.registry.EndBlocks;
 import org.betterx.betterend.registry.EndFeatures;
 import org.betterx.betterend.registry.EndSounds;
+import org.betterx.betterend.registry.EndStructures;
 import org.betterx.betterend.world.biome.EndBiome;
 
 import net.minecraft.tags.BiomeTags;
@@ -30,6 +31,7 @@ public class DryShrublandBiome extends EndBiome.Config {
                 .feature(EndFeatures.LUTEBUS)
                 .feature(EndFeatures.LAMELLARIUM)
                 .structure(BiomeTags.HAS_END_CITY)
+                .structure(EndStructures.ETERNAL_PORTAL)
                 .spawn(EntityType.ENDERMAN, 50, 1, 2);
     }
 
diff --git a/src/main/java/org/betterx/betterend/world/biome/land/DustWastelandsBiome.java b/src/main/java/org/betterx/betterend/world/biome/land/DustWastelandsBiome.java
index 93884346..7ac9f417 100644
--- a/src/main/java/org/betterx/betterend/world/biome/land/DustWastelandsBiome.java
+++ b/src/main/java/org/betterx/betterend/world/biome/land/DustWastelandsBiome.java
@@ -9,7 +9,6 @@ import org.betterx.betterend.registry.EndStructures;
 import org.betterx.betterend.world.biome.EndBiome;
 
 import net.minecraft.core.particles.ParticleTypes;
-import net.minecraft.tags.BiomeTags;
 import net.minecraft.world.entity.EntityType;
 import net.minecraft.world.level.block.Blocks;
 import net.minecraft.world.level.block.state.BlockState;
@@ -31,8 +30,8 @@ public class DustWastelandsBiome extends EndBiome.Config {
                 .particles(ParticleTypes.WHITE_ASH, 0.01F)
                 .loop(EndSounds.AMBIENT_DUST_WASTELANDS)
                 .music(EndSounds.MUSIC_OPENSPACE)
-                .structure(BiomeTags.HAS_END_CITY)
-                .structure(EndStructures.END_VILLAGE.biomeTag)
+                .structure(EndStructures.END_VILLAGE)
+                .structure(EndStructures.ETERNAL_PORTAL)
                 .spawn(EntityType.ENDERMAN, 50, 1, 2);
     }
 
diff --git a/src/main/java/org/betterx/betterend/world/biome/land/FoggyMushroomlandBiome.java b/src/main/java/org/betterx/betterend/world/biome/land/FoggyMushroomlandBiome.java
index 4fc40723..dec98827 100644
--- a/src/main/java/org/betterx/betterend/world/biome/land/FoggyMushroomlandBiome.java
+++ b/src/main/java/org/betterx/betterend/world/biome/land/FoggyMushroomlandBiome.java
@@ -40,6 +40,7 @@ public class FoggyMushroomlandBiome extends EndBiome.Config {
                 .feature(EndFeatures.CHARNIA_LIGHT_BLUE)
                 .feature(EndFeatures.CHARNIA_RED_RARE)
                 .structure(BiomeTags.HAS_END_CITY)
+                .structure(EndStructures.ETERNAL_PORTAL)
                 .spawn(EndEntities.DRAGONFLY, 80, 2, 5)
                 .spawn(EndEntities.END_FISH, 20, 2, 5)
                 .spawn(EndEntities.CUBOZOA, 10, 3, 8)
diff --git a/src/main/java/org/betterx/betterend/world/biome/land/GlowingGrasslandsBiome.java b/src/main/java/org/betterx/betterend/world/biome/land/GlowingGrasslandsBiome.java
index 5b45f319..f9d3768c 100644
--- a/src/main/java/org/betterx/betterend/world/biome/land/GlowingGrasslandsBiome.java
+++ b/src/main/java/org/betterx/betterend/world/biome/land/GlowingGrasslandsBiome.java
@@ -38,6 +38,7 @@ public class GlowingGrasslandsBiome extends EndBiome.Config {
                 .feature(EndFeatures.CHARNIA_LIGHT_BLUE)
                 .feature(EndFeatures.CHARNIA_RED_RARE)
                 .structure(BiomeTags.HAS_END_CITY)
+                .structure(EndStructures.END_VILLAGE)
                 .spawn(EntityType.ENDERMAN, 50, 1, 2);
     }
 
diff --git a/src/main/java/org/betterx/betterend/world/biome/land/LanternWoodsBiome.java b/src/main/java/org/betterx/betterend/world/biome/land/LanternWoodsBiome.java
index 6ba2890d..cca10f0b 100644
--- a/src/main/java/org/betterx/betterend/world/biome/land/LanternWoodsBiome.java
+++ b/src/main/java/org/betterx/betterend/world/biome/land/LanternWoodsBiome.java
@@ -38,6 +38,7 @@ public class LanternWoodsBiome extends EndBiome.Config {
                 .feature(EndFeatures.RUSCUS)
                 .feature(EndFeatures.RUSCUS_WOOD)
                 .structure(BiomeTags.HAS_END_CITY)
+                .structure(EndStructures.ETERNAL_PORTAL)
                 .spawn(EntityType.ENDERMAN, 50, 1, 2);
     }
 
diff --git a/src/main/java/org/betterx/betterend/world/biome/land/NeonOasisBiome.java b/src/main/java/org/betterx/betterend/world/biome/land/NeonOasisBiome.java
index 62aedb70..9a2bd61c 100644
--- a/src/main/java/org/betterx/betterend/world/biome/land/NeonOasisBiome.java
+++ b/src/main/java/org/betterx/betterend/world/biome/land/NeonOasisBiome.java
@@ -4,10 +4,7 @@ import org.betterx.bclib.api.v2.levelgen.biomes.BCLBiomeBuilder;
 import org.betterx.bclib.api.v2.levelgen.surface.SurfaceRuleBuilder;
 import org.betterx.bclib.api.v2.levelgen.surface.rules.SwitchRuleSource;
 import org.betterx.bclib.interfaces.SurfaceMaterialProvider;
-import org.betterx.betterend.registry.EndBiomes;
-import org.betterx.betterend.registry.EndBlocks;
-import org.betterx.betterend.registry.EndFeatures;
-import org.betterx.betterend.registry.EndSounds;
+import org.betterx.betterend.registry.*;
 import org.betterx.betterend.world.biome.EndBiome;
 import org.betterx.betterend.world.surface.SplitNoiseCondition;
 
@@ -45,6 +42,7 @@ public class NeonOasisBiome extends EndBiome.Config {
                 .feature(EndFeatures.CHARNIA_GREEN)
                 .feature(EndFeatures.CHARNIA_RED)
                 .structure(BiomeTags.HAS_END_CITY)
+                .structure(EndStructures.ETERNAL_PORTAL)
                 .spawn(EntityType.ENDERMAN, 50, 1, 2);
     }
 
diff --git a/src/main/java/org/betterx/betterend/world/biome/land/ShadowForestBiome.java b/src/main/java/org/betterx/betterend/world/biome/land/ShadowForestBiome.java
index a6eafaa3..7e295cc0 100644
--- a/src/main/java/org/betterx/betterend/world/biome/land/ShadowForestBiome.java
+++ b/src/main/java/org/betterx/betterend/world/biome/land/ShadowForestBiome.java
@@ -40,6 +40,7 @@ public class ShadowForestBiome extends EndBiome.Config {
                 .feature(EndFeatures.CHARNIA_PURPLE)
                 .feature(EndFeatures.CHARNIA_RED_RARE)
                 .structure(BiomeTags.HAS_END_CITY)
+                .structure(EndStructures.ETERNAL_PORTAL)
                 .spawn(EndEntities.SHADOW_WALKER, 80, 2, 4)
                 .spawn(EntityType.ENDERMAN, 40, 1, 4)
                 .spawn(EntityType.PHANTOM, 1, 1, 2);
diff --git a/src/main/java/org/betterx/betterend/world/biome/land/SulphurSpringsBiome.java b/src/main/java/org/betterx/betterend/world/biome/land/SulphurSpringsBiome.java
index b2b10e9d..59d3e487 100644
--- a/src/main/java/org/betterx/betterend/world/biome/land/SulphurSpringsBiome.java
+++ b/src/main/java/org/betterx/betterend/world/biome/land/SulphurSpringsBiome.java
@@ -47,6 +47,7 @@ public class SulphurSpringsBiome extends EndBiome.Config {
                 .feature(EndFeatures.CHARNIA_GREEN)
                 .feature(EndFeatures.CHARNIA_ORANGE)
                 .feature(EndFeatures.CHARNIA_RED_RARE)
+                .structure(EndStructures.ETERNAL_PORTAL)
                 .spawn(EndEntities.END_FISH, 50, 3, 8)
                 .spawn(EndEntities.CUBOZOA, 50, 3, 8)
                 .spawn(EntityType.ENDERMAN, 50, 1, 4);
diff --git a/src/main/java/org/betterx/betterend/world/biome/land/UmbrellaJungleBiome.java b/src/main/java/org/betterx/betterend/world/biome/land/UmbrellaJungleBiome.java
index 6b0807f7..fdab66f9 100644
--- a/src/main/java/org/betterx/betterend/world/biome/land/UmbrellaJungleBiome.java
+++ b/src/main/java/org/betterx/betterend/world/biome/land/UmbrellaJungleBiome.java
@@ -42,6 +42,7 @@ public class UmbrellaJungleBiome extends EndBiome.Config {
                 .feature(EndFeatures.CHARNIA_LIGHT_BLUE)
                 .feature(EndFeatures.CHARNIA_RED_RARE)
                 .structure(BiomeTags.HAS_END_CITY)
+                .structure(EndStructures.ETERNAL_PORTAL)
                 .spawn(EntityType.ENDERMAN, 50, 1, 2);
     }
 
diff --git a/src/main/java/org/betterx/datagen/betterend/worldgen/EndBiomesDataProvider.java b/src/main/java/org/betterx/datagen/betterend/worldgen/EndBiomesDataProvider.java
index 84bf4232..991f5d0a 100644
--- a/src/main/java/org/betterx/datagen/betterend/worldgen/EndBiomesDataProvider.java
+++ b/src/main/java/org/betterx/datagen/betterend/worldgen/EndBiomesDataProvider.java
@@ -3,9 +3,11 @@ package org.betterx.datagen.betterend.worldgen;
 import org.betterx.bclib.api.v2.levelgen.biomes.BCLBiome;
 import org.betterx.bclib.api.v2.levelgen.biomes.BCLBiomeBuilder;
 import org.betterx.bclib.api.v2.levelgen.biomes.BCLBiomeRegistry;
+import org.betterx.bclib.api.v2.levelgen.biomes.BiomeAPI;
 import org.betterx.bclib.api.v2.levelgen.biomes.BiomeAPI.BiomeType;
 import org.betterx.bclib.api.v3.datagen.TagDataProvider;
 import org.betterx.betterend.BetterEnd;
+import org.betterx.betterend.registry.EndStructures;
 import org.betterx.betterend.world.biome.EndBiome;
 import org.betterx.betterend.world.biome.air.BiomeIceStarfield;
 import org.betterx.betterend.world.biome.cave.*;
@@ -87,6 +89,12 @@ public class EndBiomesDataProvider extends TagDataProvider<Biome> {
     }
 
     public static void ensureStaticallyLoaded() {
+        TagManager.BIOMES.add(
+                EndStructures.ETERNAL_PORTAL.biomeTag,
+                BiomeAPI.END_BARRENS.getBiomeKey(),
+                BiomeAPI.END_MIDLANDS.getBiomeKey(),
+                BiomeAPI.END_HIGHLANDS.getBiomeKey()
+        );
     }
 
     static {