diff --git a/src/Speckle.Objects/Data/ArchicadObject.cs b/src/Speckle.Objects/Data/ArchicadObject.cs
new file mode 100644
index 00000000..2c9ffe2b
--- /dev/null
+++ b/src/Speckle.Objects/Data/ArchicadObject.cs
@@ -0,0 +1,23 @@
+using Speckle.Objects.Geometry;
+using Speckle.Sdk.Models;
+
+namespace Speckle.Objects.Data;
+
+/// <summary>
+/// Represents a base class object in Archicad
+/// </summary>
+[SpeckleType("Objects.Data.ArchicadObject")]
+public class ArchicadObject : DataObject, IArchicadObject
+{
+  public required string type { get; set; }
+
+  public required string level { get; set; }
+
+  /// <summary>
+  /// The full classification tree path of an Archicad object
+  /// </summary>
+  /// <remarks>
+  /// The list order is from root to leaf of the classification tree
+  /// </remarks>
+  public required List<string> classification { get; set; }
+}
diff --git a/src/Speckle.Objects/GIS/CRS.cs b/src/Speckle.Objects/GIS/CRS.cs
deleted file mode 100644
index ae4f04dc..00000000
--- a/src/Speckle.Objects/GIS/CRS.cs
+++ /dev/null
@@ -1,15 +0,0 @@
-using Speckle.Sdk.Models;
-
-namespace Speckle.Objects.GIS;
-
-[SpeckleType("Objects.GIS.CRS")]
-public class CRS : Base
-{
-  public string? name { get; set; }
-  public string? authority_id { get; set; }
-  public string? wkt { get; set; }
-  public string? units_native { get; set; }
-  public float? offset_x { get; set; }
-  public float? offset_y { get; set; }
-  public float? rotation { get; set; }
-}
diff --git a/src/Speckle.Objects/GIS/GisMultipatchFeature.cs b/src/Speckle.Objects/GIS/GisMultipatchFeature.cs
deleted file mode 100644
index 7de6a6da..00000000
--- a/src/Speckle.Objects/GIS/GisMultipatchFeature.cs
+++ /dev/null
@@ -1,19 +0,0 @@
-using Speckle.Objects.Geometry;
-using Speckle.Sdk.Models;
-
-namespace Speckle.Objects.GIS;
-
-[SpeckleType("Objects.GIS.GisMultipatchFeature")]
-public class GisMultipatchFeature : Base, IGisFeature, IDisplayValue<List<Mesh>>
-{
-  public required Base attributes { get; set; }
-
-  /// <summary>
-  /// Multipatch geometry should be of type <see cref="GisMultipatchGeometry"/> or <see cref="PolygonGeometry3d"/>
-  /// </summary>
-  [DetachProperty]
-  public required List<Base> geometry { get; set; }
-
-  [DetachProperty]
-  public required List<Mesh> displayValue { get; set; }
-}
diff --git a/src/Speckle.Objects/GIS/GisMultipatchGeometry.cs b/src/Speckle.Objects/GIS/GisMultipatchGeometry.cs
deleted file mode 100644
index f4bc67db..00000000
--- a/src/Speckle.Objects/GIS/GisMultipatchGeometry.cs
+++ /dev/null
@@ -1,18 +0,0 @@
-using Speckle.Sdk.Models;
-
-namespace Speckle.Objects.GIS;
-
-[SpeckleType("Objects.GIS.GisMultipatchGeometry")]
-public class GisMultipatchGeometry : Base
-{
-  public string units { get; set; }
-  public List<int> faces { get; set; }
-  public List<double> vertices { get; set; }
-  public List<int>? colors { get; set; }
-
-  public GisMultipatchGeometry()
-  {
-    faces = new List<int>();
-    vertices = new List<double>();
-  }
-}
diff --git a/src/Speckle.Objects/GIS/GisNonGeometricFeature.cs b/src/Speckle.Objects/GIS/GisNonGeometricFeature.cs
deleted file mode 100644
index d53c6b84..00000000
--- a/src/Speckle.Objects/GIS/GisNonGeometricFeature.cs
+++ /dev/null
@@ -1,9 +0,0 @@
-using Speckle.Sdk.Models;
-
-namespace Speckle.Objects.GIS;
-
-[SpeckleType("Objects.GIS.GisNonGeometricFeature")]
-public class GisNonGeometricFeature : Base, IGisFeature
-{
-  public required Base attributes { get; set; }
-}
diff --git a/src/Speckle.Objects/GIS/GisPointFeature.cs b/src/Speckle.Objects/GIS/GisPointFeature.cs
deleted file mode 100644
index 57493268..00000000
--- a/src/Speckle.Objects/GIS/GisPointFeature.cs
+++ /dev/null
@@ -1,21 +0,0 @@
-using Speckle.Newtonsoft.Json;
-using Speckle.Objects.Geometry;
-using Speckle.Sdk.Models;
-
-namespace Speckle.Objects.GIS;
-
-[SpeckleType("Objects.GIS.GisPointFeature")]
-public class GisPointFeature : Base, IGisFeature, IDisplayValue<List<Point>>
-{
-  public required Base attributes { get; set; }
-
-  [JsonIgnore]
-  public required List<Point> geometry
-  {
-    get => displayValue;
-    set => displayValue = value;
-  }
-
-  [DetachProperty]
-  public List<Point> displayValue { get; set; }
-}
diff --git a/src/Speckle.Objects/GIS/GisPolygonFeature.cs b/src/Speckle.Objects/GIS/GisPolygonFeature.cs
deleted file mode 100644
index 90c9d81f..00000000
--- a/src/Speckle.Objects/GIS/GisPolygonFeature.cs
+++ /dev/null
@@ -1,16 +0,0 @@
-using Speckle.Objects.Geometry;
-using Speckle.Sdk.Models;
-
-namespace Speckle.Objects.GIS;
-
-[SpeckleType("Objects.GIS.GisPolygonFeature")]
-public class GisPolygonFeature : Base, IGisFeature, IDisplayValue<List<Mesh>>
-{
-  public required Base attributes { get; set; }
-
-  [DetachProperty]
-  public required List<PolygonGeometry> geometry { get; set; }
-
-  [DetachProperty]
-  public required List<Mesh> displayValue { get; set; }
-}
diff --git a/src/Speckle.Objects/GIS/GisPolylineFeature.cs b/src/Speckle.Objects/GIS/GisPolylineFeature.cs
deleted file mode 100644
index 2f4b578d..00000000
--- a/src/Speckle.Objects/GIS/GisPolylineFeature.cs
+++ /dev/null
@@ -1,21 +0,0 @@
-using Speckle.Newtonsoft.Json;
-using Speckle.Objects.Geometry;
-using Speckle.Sdk.Models;
-
-namespace Speckle.Objects.GIS;
-
-[SpeckleType("Objects.GIS.GisPolylineFeature")]
-public class GisPolylineFeature : Base, IGisFeature, IDisplayValue<List<Polyline>>
-{
-  public required Base attributes { get; set; }
-
-  [JsonIgnore]
-  public required List<Polyline> geometry
-  {
-    get => displayValue;
-    set => displayValue = value;
-  }
-
-  [DetachProperty]
-  public List<Polyline> displayValue { get; set; }
-}
diff --git a/src/Speckle.Objects/GIS/PolygonGeometry.cs b/src/Speckle.Objects/GIS/PolygonGeometry.cs
deleted file mode 100644
index 2a3a3cdb..00000000
--- a/src/Speckle.Objects/GIS/PolygonGeometry.cs
+++ /dev/null
@@ -1,17 +0,0 @@
-using Speckle.Objects.Geometry;
-using Speckle.Sdk.Models;
-
-namespace Speckle.Objects.GIS;
-
-[SpeckleType("Objects.GIS.PolygonGeometry")]
-public class PolygonGeometry : Base
-{
-  public string units { get; set; }
-  public Polyline boundary { get; set; }
-  public List<Polyline> voids { get; set; }
-
-  public PolygonGeometry()
-  {
-    voids = new List<Polyline>();
-  }
-}
diff --git a/src/Speckle.Objects/GIS/PolygonGeometry3d.cs b/src/Speckle.Objects/GIS/PolygonGeometry3d.cs
deleted file mode 100644
index 6a2ee318..00000000
--- a/src/Speckle.Objects/GIS/PolygonGeometry3d.cs
+++ /dev/null
@@ -1,6 +0,0 @@
-using Speckle.Sdk.Models;
-
-namespace Speckle.Objects.GIS;
-
-[SpeckleType("Objects.GIS.PolygonGeometry3d")]
-public class PolygonGeometry3d : PolygonGeometry { }
diff --git a/src/Speckle.Objects/GIS/RasterElement.cs b/src/Speckle.Objects/GIS/RasterElement.cs
deleted file mode 100644
index cb1b78fb..00000000
--- a/src/Speckle.Objects/GIS/RasterElement.cs
+++ /dev/null
@@ -1,52 +0,0 @@
-using Speckle.Objects.Geometry;
-using Speckle.Sdk.Models;
-
-namespace Speckle.Objects.GIS;
-
-[SpeckleType("Objects.GIS.RasterElement")]
-public class RasterElement : Base
-{
-  public int band_count { get; set; }
-  public List<string> band_names { get; set; }
-  public float x_origin { get; set; }
-  public float y_origin { get; set; }
-  public int x_size { get; set; }
-  public int y_size { get; set; }
-  public float x_resolution { get; set; }
-  public float y_resolution { get; set; }
-  public List<float?> noDataValue { get; set; }
-
-  [DetachProperty]
-  public List<Mesh> displayValue { get; set; }
-
-  public RasterElement()
-  {
-    displayValue = new List<Mesh>();
-    band_names = new List<string>();
-    noDataValue = new List<float?>();
-  }
-
-  public RasterElement(
-    int bandCount,
-    List<string> bandNames,
-    float xOrigin,
-    float yOrigin,
-    int xSize,
-    int ySize,
-    float xResolution,
-    float yResolution,
-    List<float?> noDataValue
-  )
-  {
-    displayValue = new List<Mesh>();
-    band_count = bandCount;
-    band_names = bandNames;
-    x_origin = xOrigin;
-    y_origin = yOrigin;
-    x_size = xSize;
-    y_size = ySize;
-    x_resolution = xResolution;
-    y_resolution = yResolution;
-    this.noDataValue = noDataValue;
-  }
-}
diff --git a/src/Speckle.Objects/GIS/RasterLayer.cs b/src/Speckle.Objects/GIS/RasterLayer.cs
deleted file mode 100644
index d0240cf9..00000000
--- a/src/Speckle.Objects/GIS/RasterLayer.cs
+++ /dev/null
@@ -1,14 +0,0 @@
-using Speckle.Sdk.Models;
-using Speckle.Sdk.Models.Collections;
-
-namespace Speckle.Objects.GIS;
-
-[SpeckleType("Objects.GIS.RasterLayer")]
-public class RasterLayer : Collection
-{
-  public CRS? crs { get; set; }
-  public string? units { get; set; }
-  public CRS? rasterCrs { get; set; }
-  public string? geomType { get; set; }
-  public Dictionary<string, object>? renderer { get; set; }
-}
diff --git a/src/Speckle.Objects/GIS/VectorLayer.cs b/src/Speckle.Objects/GIS/VectorLayer.cs
deleted file mode 100644
index 80673982..00000000
--- a/src/Speckle.Objects/GIS/VectorLayer.cs
+++ /dev/null
@@ -1,20 +0,0 @@
-using Speckle.Sdk.Models;
-using Speckle.Sdk.Models.Collections;
-
-namespace Speckle.Objects.GIS;
-
-[SpeckleType("Objects.GIS.VectorLayer")]
-public class VectorLayer : Collection
-{
-  public CRS? crs { get; set; }
-  public string? units { get; set; }
-  public Base attributes { get; set; }
-  public string? geomType { get; set; }
-  public string? nativeGeomType { get; set; }
-  public Dictionary<string, object>? renderer { get; set; }
-
-  public VectorLayer()
-  {
-    attributes = new Base();
-  }
-}
diff --git a/src/Speckle.Objects/Interfaces.cs b/src/Speckle.Objects/Interfaces.cs
index 93237bc9..5eaa00bd 100644
--- a/src/Speckle.Objects/Interfaces.cs
+++ b/src/Speckle.Objects/Interfaces.cs
@@ -108,14 +108,6 @@ public interface IDisplayValue<out T> : ISpeckleObject
 
 #endregion
 
-#region GIS
-public interface IGisFeature : ISpeckleObject
-{
-  Base attributes { get; set; }
-}
-
-#endregion
-
 #region Data objects
 
 /// <summary>
@@ -175,6 +167,15 @@ public interface IGisObject : IDataObject
   string type { get; }
 }
 
+public interface IArchicadObject : IDataObject
+{
+  string type { get; }
+
+  string level { get; }
+
+  List<string> classification { get; }
+}
+
 public interface INavisworksObject : IDataObject { }