Shaun is a Scottish architectural designer and the founder of Fenestra, an AI-first 3D rendering software for architects and interior designers.
In architecture he has practised at HASSELL and John Wardle Architects, worked on AR/VR at Meta Reality Labs, and co-founded iheartblob, an experimental architecture collective known for its explorations into mixed reality and digital design.
He has taught at UCLA's School of Architecture and Urban Design, and his work has been exhibited internationally at institutions including the V&A Museum, MAK Vienna, and the Tallinn Architecture Biennale, where he co-designed the world's first blockchain-enabled pavilion.
Articles by Shaun McCallum
Is conversation the next 3D modelling tool? We tested AI modelling in Rhino
We tested AI 3D modelling in Rhino, driving geometry by conversation, then rendering in Fenestra. Where text-to-3D works, and where it doesn't yet.
Jun 16, 2026
Fenestra 101: Sketch to Render, Virtual Staging and AI Editing for Architects & Interior Designers
In this introductory Fenestra webinar, we walk through the core tools architects and designers can use to turn early ideas into visual concepts. The session covers sketch to render workflows, virtual staging, adding furniture, editing images, removing elements and using AI to quickly explore design directions.
Jun 9, 2026
Stop making AI slop. Make something only you can.
Everyone can make a photoreal render now, so none of them stand out. Realism is the floor. Drawing has always been the real work, and that is what AI should amplify.
Jun 2, 2026
One image, three directions
Most studios don't need one perfect render. They need a decision. Here's the three-direction workflow that turns one image into three plausible futures, and a faster way to land design choices that win client meetings.
May 25, 2026
Fenestra 101: Our First Webinar
We're running our first ever live webinar on June 3rd. A hands-on intro to Fenestra for architects and interior designers, covering image generation from prompts, 2D and 3D inputs, video, and where AI actually fits in your practice. 30 seats only.
May 11, 2026
AI will design all architecture.
A step-by-step look at using GPT-Image-2 and Fenestra to design a Tokyo-inspired residence — from generating the base image to material studies and a full competition board. Simple prompts, real results.
May 4, 2026
GPT-Image-2 is a serious contender for best editing model
Testing GPT-Image-2 on a Japanese-inspired teahouse: prompt-based edits, expanding a single image into a full competition board with plans, sections and elevations, and generating creative multi-view triptychs in a single generation.
Apr 27, 2026
Seedance 2.0 now in Fenestra
We just shipped Seedance 2.0 and Seedance 2.0 Fast in Fenestra's Video tool. 720p cinematic video, automatic audio for interior and exterior shots, and significantly better transitions between scenes. Both models are available now.
Apr 20, 2026
Create, edit, enhance and animate in Fenestra Studio
We’ve released a major update to Fenestra Studio alongside a full overhaul of our documentation. Learn how to generate visuals from prompts, edit and refine designs, render in realtime, enhance outputs, and animate still images using AI workflows built for architects and designers.
Apr 13, 2026
Realtime AI Rendering
Realtime AI rendering for images and 3D models. Edit materials, lighting, environments and styles instantly with simple prompts. Now available in alpha.
Mar 30, 2026
AI will replace some architects. Not the ones using it properly!
AI is improving fast, and in some cases it’s already impressive. But it still needs direction. The real shift isn’t AI replacing architects, it’s changing which ones gain an advantage.
Mar 23, 2026
Can AI Draw 2D Architectural Drawings?
Testing Nano Banana 2 to see if AI can generate architectural elevations, diagrams, and sections from a single image.
Mar 16, 2026
Renders, Diagrams, Animation.
How I generate concept images and simple video transitions using Nano Banana 2 in Fenestra!
Mar 9, 2026
Simple prompts work best. Work iteratively.
Learn why simple prompts outperform complex ones in AI architecture workflows. Practical guidance for getting better, more stable results with Fenestra.
Feb 23, 2026
Wake Up New Seedance + Qwen Dropped
Seedance 1.5 Pro and Qwen Image Edit 2511 have just landed in Fenestra, unlocking a smoother way to edit, animate, and bring images to life with sound.
Jan 12, 2026
How to use Nano Banana Pro for Interiors & Architecture
Learn how to use Nano Banana Pro inside Fenestra to turn 2D plans into spatial interior and architectural visualisations, including top-down 3D renders.
Nov 24, 2025
5 Nano Banana 2 (Pro) Prompts for Architecture & Interior Design in Fenestra
Nano Banana 2 - now Nano Banana Pro - is available inside Fenestra with native 1K, 2K and full 4K image generation. It works seamlessly across Sketch To Render, Conversational Edit, Add Anything and Texture 3D. Here are 5 high-performing prompts you can use right now for interiors, exteriors and cinematic architectural shots.
Nov 20, 2025
One Click 1080p Video Renderings
Create cinematic 1080p video renderings in Fenestra with one click using Seedance 1.0 Pro and Lite. Combine Nano Banana, Flux Krea Dev and Flux Kontext to create high-quality stunning interior design visuals without the complexity.
Oct 27, 2025
Interior Design Reinvented: Nano Banana Meets Fenestra
5 Prompts for quick edits, lighting moods, and archviz-ready renders — see why designers are combining AI models in Fenestra.
Sep 15, 2025
Axonometric Illustrations with Fenestra x Nano Banana
Discover how Nano Banana can help architects and designers explore forms, materials, and moods faster than ever.
Sep 8, 2025
Nano Banana x Fenestra
Discover how Nano Banana can help architects and designers explore forms, materials, and moods faster than ever.
Sep 1, 2025
Create Consistent Views In Fenestra
Most architects or interior designers don’t realise you can do this. One image. Five professional-grade architectural visuals — all generated, edited, and animated without switching tools.
Jul 7, 2025