diff --git a/biomes/frozen-redwoods-forest.json b/biomes/frozen-redwoods-forest.json
new file mode 100644
index 00000000..8a19e4b6
--- /dev/null
+++ b/biomes/frozen-redwoods-forest.json
@@ -0,0 +1,187 @@
+{
+    "name": "Frozen Redwoods",
+    "layers": [
+        {
+            "minHeight": 2,
+            "maxHeight": 3,
+            "palette": [
+                "SNOW_BLOCK"
+            ]
+        },
+        {
+            "minHeight": 2,
+            "maxHeight": 4,
+            "palette": [
+                "PACKED_ICE"
+            ]
+        },
+        {
+            "minHeight": 6,
+            "maxHeight": 18,
+            "style": {
+                "style": "STATIC"
+            },
+            "palette": [
+                "STONE",
+                "ANDESITE",
+                "STONE"
+            ]
+        }
+    ],
+    "wall": {
+        "style": {
+            "style": "STATIC"
+        },
+        "palette": [
+            "STONE",
+            "ANDESITE",
+            "STONE"
+        ]
+    },
+    "decorators": [
+        {
+            "palette": [
+                "minecraft:snow[layers=1]",
+                "minecraft:snow[layers=2]",
+                "minecraft:snow[layers=3]",
+                "minecraft:snow[layers=4]"
+            ],
+            "chance": 1,
+            "variance": {
+                "style": "IRIS",
+                "zoom": 0.25
+            }
+        }
+    ],
+    "children": [
+        "frozen-peak",
+        "frozen-mountains",
+        "frozen-vander"
+    ],
+    "objects": [
+        {
+            "chance": 0.02,
+            "density": 3,
+            "rotation": {
+                "yAxis": {
+                    "min": 0,
+                    "max": 0,
+                    "interval": 90,
+                    "enabled": true
+                },
+                "enabled": true
+            },
+            "snow": 0.35,
+            "place": [
+                "ice-spikes/ic-1",
+                "ice-spikes/ic-2",
+                "ice-spikes/ic-3",
+                "ice-spikes/ic-4",
+                "ice-spikes/ic-5",
+                "ice-spikes/ic-6",
+                "ice-spikes/ic-7",
+                "ice-spikes/ic-8",
+                "ice-spikes/ic-9",
+                "ice-spikes/ic-10",
+                "ice-spikes/ic-11",
+                "ice-spikes/sp-1",
+                "ice-spikes/sp-2",
+                "ice-spikes/sp-3",
+                "ice-spikes/sp-4",
+                "ice-spikes/sp-5",
+                "ice-spikes/tp-1",
+                "ice-spikes/tp-2",
+                "ice-spikes/tp-3",
+                "ice-spikes/tp-4"
+            ],
+            "translate": {
+                "x": 0,
+                "y": 0,
+                "z": 0
+            }
+        },
+        {
+            "chance": 0.8,
+            "rotation": {
+                "yAxis": {
+                    "min": 0,
+                    "max": 0,
+                    "interval": 90,
+                    "enabled": true
+                },
+                "enabled": true
+            },
+            "place": [
+                "true-redwood/true-redwood-1",
+                "true-redwood/true-redwood-2",
+                "true-redwood/true-redwood-3",
+                "true-redwood/true-redwood-4",
+                "true-redwood/true-redwood-5",
+                "true-redwood/true-redwood-6",
+                "true-redwood/true-redwood-7",
+                "true-redwood/true-redwood-8",
+                "true-redwood/true-redwood-9",
+                "true-redwood/true-redwood-10"
+            ],
+            "translate": {
+                "x": 0,
+                "y": -10,
+                "z": 0
+            }
+        },
+        {
+            "chance": 0.05,
+            "density": 3,
+            "rotation": {
+                "yAxis": {
+                    "min": 0,
+                    "max": 0,
+                    "interval": 90,
+                    "enabled": true
+                },
+                "enabled": true
+            },
+            "snow": 0.35,
+            "place": [
+                "ice-spikes/ice-spec-1",
+                "ice-spikes/ice-spec-2",
+                "ice-spikes/ice-spec-3",
+                "ice-spikes/ice-spec-4",
+                "ice-spikes/ice-spec-5"
+            ],
+            "translate": {
+                "x": 0,
+                "y": 0,
+                "z": 0
+            }
+        }
+    ],
+    "generators": [
+        {
+            "generator": "plain",
+            "min": 3,
+            "max": 16
+        },
+        {
+            "generator": "mountain",
+            "min": 13,
+            "max": 48
+        }
+    ],
+    "childShrinkFactor": 20,
+    "derivative": "SNOWY_TAIGA_MOUNTAINS",
+    "biomeStyle": {
+        "style": "IRIS"
+    },
+    "biomeZoom": 30,
+    "biomeScatter": [
+        "SNOWY_TAIGA_MOUNTAINS",
+        "TAIGA_HILLS",
+        "MOUNTAINS",
+        "ICE_SPIKES"
+    ],
+    "biomeSkyScatter": [
+        "SNOWY_TAIGA",
+        "SNOWY_MOUNTAINS"
+    ]
+}
\ No newline at end of file
diff --git a/regions/frozen.json b/regions/frozen.json
index ecd7e4fd..f16b529c 100644
--- a/regions/frozen.json
+++ b/regions/frozen.json
@@ -56,7 +56,8 @@
     "landBiomes": [
         "frozen-plains",
         "frozen-mountains",
-        "frozen-mountains-cliffs"
+        "frozen-mountains-cliffs",
+        "frozen-redwoods-forest"
     ],
     "seaBiomes": [
         "frozen-ocean"
@@ -83,6 +84,13 @@
             "shuffle": 328
         }
     ],
+    "structures": [
+        {
+            "tileset": "ruins",
+            "rarity": 150,
+            "zoom": 1
+        }
+    ],
     "deposits": [
         {
             "minHeight": 8,
diff --git a/regions/mosaic.json b/regions/mosaic.json
index c851e37d..c508a56c 100644
--- a/regions/mosaic.json
+++ b/regions/mosaic.json
@@ -1,5 +1,5 @@
 {
-    "name": "Hot",
+    "name": "The Mosaics",
     "biomeImplosionRatio": 0.25,
     "shoreHeightMin": 3.2,
     "rarity": 30,
@@ -29,6 +29,13 @@
             "hot-treasure"
         ]
     },
+    "structures": [
+        {
+            "tileset": "ruins",
+            "rarity": 150,
+            "zoom": 1
+        }
+    ],
     "effects": [
         {
             "interval": 1350,
diff --git a/regions/mushroom.json b/regions/mushroom.json
index 4635e602..61bb1ce0 100644
--- a/regions/mushroom.json
+++ b/regions/mushroom.json
@@ -42,6 +42,21 @@
             ]
         }
     ],
+    "structures": [
+        {
+            "tileset": "ruins",
+            "rarity": 150,
+            "zoom": 1
+        },
+        {
+            "tileset": "mush-huts",
+            "zoom": 1,
+            "ratio": 0.05,
+            "rarity": 85,
+            "shuffle": 5
+
+        }
+    ],
     "spotBiomes": [
         {
             "biome": "mushroom-crimson-forest",
diff --git a/regions/temperate.json b/regions/temperate.json
index 27dc5ef4..cfd00517 100644
--- a/regions/temperate.json
+++ b/regions/temperate.json
@@ -50,6 +50,13 @@
             "temperate-clutter"
         ]
     },
+    "structures": [
+        {
+            "tileset": "ruins",
+            "rarity": 150,
+            "zoom": 1
+        }
+    ],
     "deposits": [
         {
             "minHeight": 15,
diff --git a/regions/tropical.json b/regions/tropical.json
index 1046cced..d7f2bcf2 100644
--- a/regions/tropical.json
+++ b/regions/tropical.json
@@ -44,6 +44,13 @@
             "scale": 2.65
         }
     ],
+    "structures": [
+        {
+            "tileset": "ruins",
+            "rarity": 150,
+            "zoom": 1
+        }
+    ],
     "deposits": [
         {
             "minHeight": 25,