Is the Gothic Cathedral 3D model free for commercial use?

Yes. It is free under the 1DesignTool 3D library license: use it in personal and commercial work — games, apps, websites, renders, ads and client projects — and modify it as you like, with no credit required. What you can't do is re-sell or re-distribute the file on its own or inside a model pack.

What file format is it, and how big is it?

A single binary glTF 2.0 file (.glb), 39.1 MB: 2,156,170 triangles, 2,315,012 vertices and 80 materials, modelled in metres at 65 m × 92 m × 147 m.

Is Gothic Cathedral animated?

Yes — the GLB carries a baked animation (12.0 s), ready to play with any glTF animation mixer.

Which engines and tools can open it?

Anything that reads glTF 2.0. three.js, React Three Fiber, Babylon.js, Godot 4 and Blender import the GLB directly; Unity and Unreal Engine load it through their glTF importers. The snippets above show the exact code for three.js, React Three Fiber, Godot and Blender.

How was the Gothic Cathedral 3D model made?

Claude Code (Claude Opus 5.5) generated it inside 1DesignTool's 3D template from a written brief, then the design kit's checks verified the geometry and the GLB before it was published. You can make your own the same way with 1DesignTool.

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Gothic Cathedral

An original High Gothic cathedral on a paved close, about 130 m long and 92 m to its spire finials. It has twin crocketed west spires, three statue-lined portals, a gallery of kings, rose windows, leaded stained glass, double flying buttresses, a chevet of radiating chapels, a lead flèche and a glimpse of the rib-vaulted interior through the open west doors.

Original GLB39.1 MB Poster

Left rail: colours and the 5 knobs the agent wrote into this model — they rebuild the geometry and go into your download. Right rail: looks for the viewer. Drag to orbit, scroll to zoom.

Triangles: 2,156,170
Vertices: 2,315,012
Meshes · materials: 80 · 80
Size (W × H × D): 65 m × 92 m × 147 m
File: GLB · 39.1 MB
Animation: scene-motion · 12.0s
Style: Product
Collection: Hero Props

Palette · named materials

limestone#cbb791
limestone_dark#8f7e66
lead#6b727a
paving#c1b8a6
bronze#8c6631
oak#6a4628
foliage#53703a
glass_blue#162c78
glass_red#7c1019
glass_gold#a87414
glass_green#1d5a31

Use it

import { GLTFLoader } from "three/addons/loaders/GLTFLoader.js";

const gltf = await new GLTFLoader().loadAsync(
  "https://assets.stoicsoft.com/1designtool/3d/models/gothic-cathedral/831fe73216/model.glb"
);
scene.add(gltf.scene); // metres, +Y up, front faces +Z

const mixer = new THREE.AnimationMixer(gltf.scene);
gltf.animations.forEach((clip) => mixer.clipAction(clip).play());
// in your loop: mixer.update(delta)

How it was made

The brief given to 1DesignTool's “3D object” template:

An original High Gothic cathedral (not a copy of any real building), about 130 m long, 45 m wide across the transept and 90 m to the top of its twin west towers, as a showpiece architectural model on a paved cathedral close. West front: two tall square towers with open-traceried belfry stages and crocketed octagonal spires; three deep portals with stepped, moulded archivolts lined with rows of small carved statues, trumeau figures and tympanum relief; a gallery of kings (a row of statues in niches) across the facade; a great rose window with radiating stone tracery and stained glass between the towers; gabled pinnacles everywhere. Body: a tall nave and choir with pointed lancet windows filled with stone tracery (mullions, trefoils, quatrefoils) and coloured stained glass; double flying buttresses arching over the aisles to buttress piers topped by crocketed pinnacles; a crossing tower with a slender lead flèche; transept facades each with its own rose window; a chevet of radiating chapels at the east end; gargoyles projecting from the gutters; steep lead-grey roofs with ridge cresting. Through the open west portal doors and the clerestory, glimpse the interior: rows of clustered piers and ribbed quadripartite vaults. Close: paving with a stone pattern, low walls, a few trees and lamp posts. Detail is MODELLED: tracery, mouldings, crockets, statues, buttress arches, vault ribs, glass leading. Materials (all named): warm limestone, darker weathered limestone, lead roof grey, stained glass (deep blue, ruby red, gold, green — slightly emissive), bronze door, oak door, paving, foliage. No text, logos or signage. Motion: a calm seamless 12 s loop — slowly drifting light through the stained glass (emissive intensity breathing) and a few birds circling the towers. Hard requirement: the exported GLB must contain between 2,000,000 and 2,200,000 triangles — measure it before delivering and adjust detail density (tracery resolution, statue count and resolution, crockets, vault ribs) to land in that band; outside it the delivery is rejected. Keep the GLB under 60 MB: index all geometry, INSTANCE or merge repeated parts (statues, pinnacles, crockets, window tracery panels, buttresses) by material, quantize where safe, no image textures.

Agent: Claude Code · Claude Opus 5.5 in 1DesignTool
Direction: Product · family scenes
three-check FAIL (performance budget only) · glb-lint PASS

Make your own with 1DesignTool →

Named parts · 15

Gothic cathedral
Cathedral close
West front
Portals and doors
West towers and spires
Nave and aisles
Transepts
Choir and chevet
Flying buttresses and pinnacles
Tracery and stained glass
Lead roofs
Crossing flèche
Statues
Interior piers and vaults
Birds

Note: Size: 65.2 m wide (X) x 146.5 m deep (Z, close included) x 92.3 m tall, measured from the GLB. The building is about 125 m long. The west front faces +Z, the origin is at the bottom centre of the close, and the model rests on y = 0. The GLB has 2,156,170 triangles in 80 indexed meshes (one per part, material and 16-bit index range). It is 40.0 MB. Positions are Int16 and normals Int8 via KHR_mesh_quantization, which three.js, Blender, Godot and Unity glTF importers support. It has no textures, text or logos. The glass materials are transparent, double-sided and slightly emissive. One 12 s clip, 'scene-motion', wheels the bird flock round the towers with banked, flapping birds. The stained-glass glow breathes only in the viewer, because glTF clips carry transforms, not material values. The exporter writes one material per mesh, so role names repeat (recolour by name). glb-lint has 0 errors. Its grounding and scale warnings read the quantized Int16 bounds without normalization (it reports ±1.5 M m); the true bounds above come from the normalized accessors. three-check passes every check except the 1.5 M per-frame performance budget, which can't pass while the brief requires 2.0–2.2 M triangles in the GLB: the full model renders 2.24 M triangles per frame. three-check also had to run with NODE_OPTIONS=--max-old-space-size=16384, because its GLB transfer runs out of Node's default 4 GB heap on a 40 MB file. Params rebuild in the viewer only; the GLB is baked at the defaults. At the param extremes the model stays valid at 2.00 M (minimums) to 2.24 M (maximums) triangles. The paving, low walls, trees and lamps are part of the model. The viewer's shadow catcher and light rig are not.

About the Gothic Cathedral 3D model

Gothic Cathedral is a free animated PBR 3D model from the Hero Props set. It measures 65 m × 92 m × 147 m (W × H × D) at real-world scale and is built from 2,156,170 triangles across 80 meshes, with 15 named parts and a baked animation (12.0 s). Download the 39.1 MB GLB and drop it into three.js, React Three Fiber, Godot or Blender — free for commercial use, no attribution required.

Is the Gothic Cathedral 3D model free for commercial use?: Yes. It is free under the 1DesignTool 3D library license: use it in personal and commercial work — games, apps, websites, renders, ads and client projects — and modify it as you like, with no credit required. What you can't do is re-sell or re-distribute the file on its own or inside a model pack.
What file format is it, and how big is it?: A single binary glTF 2.0 file (.glb), 39.1 MB: 2,156,170 triangles, 2,315,012 vertices and 80 materials, modelled in metres at 65 m × 92 m × 147 m.
Is Gothic Cathedral animated?: Yes — the GLB carries a baked animation (12.0 s), ready to play with any glTF animation mixer.
Which engines and tools can open it?: Anything that reads glTF 2.0. three.js, React Three Fiber, Babylon.js, Godot 4 and Blender import the GLB directly; Unity and Unreal Engine load it through their glTF importers. The snippets above show the exact code for three.js, React Three Fiber, Godot and Blender.
How was the Gothic Cathedral 3D model made?: Claude Code (Claude Opus 5.5) generated it inside 1DesignTool's 3D template from a written brief, then the design kit's checks verified the geometry and the GLB before it was published. You can make your own the same way with 1DesignTool.