Unbuilt Works: Architecture
Explore architectural history
Only for iPhone
Free · In‑App Purchases · Designed for iPhone
iPhone
Explore the world's unbuilt architecture. Discover visionary designs, lost projects, and the stories behind buildings that never became real.
THE GREATEST BUILDINGS IN HISTORY—THAT WERE NEVER BUILT.
What if Frank Lloyd Wright's mile-high skyscraper reshaped Chicago? What if Buckminster Fuller's floating cities became real? What if Paris built a pyramid larger than Giza?
Unbuilt Works explores the world's most ambitious unbuilt architecture, visionary design concepts, and historical projects that came shockingly close to reality.
EXPLORE UNBUILT ARCHITECTURE WORLDWIDE
Discover thousands of unbuilt buildings, concept architecture, and never-built megastructures through an interactive global map. Tap any location to see what architects once planned for that city.
BROWSE BY ERA, STYLE, AND ARCHITECT
Find forgotten projects from:
- Ancient Roman engineering
- Renaissance city planning, including da Vinci's ideal city
- Modernism, Brutalism, and postmodern proposals
- Wright, Fuller, Zaha Hadid, and more
- Futuristic, experimental, and conceptual architecture
Search unbuilt skyscrapers, urban design concepts, retro-futurism, parametric ideas, and radical architectural visions from every era.
LEARN WHY THEY WERE NEVER BUILT
Each project includes detailed commentary on the political, engineering, economic, and design challenges that prevented construction:
- Political opposition and planning failures
- Financial collapse and budget overruns
- Engineering limits of the era
- Unrealistic design concepts
- Wars, cultural shifts, and lost opportunities
FEATURED PROJECTS
- The Palace of the Soviets
- Tatlin's Tower
- The Mile-High Illinois
- Metabolist megastructures
- Unrealized Grand Central replacements
- Experimental, cancelled, and visionary proposals worldwide
Perfect for anyone who loves architecture, design history, urban planning, and speculative buildings.
GO PREMIUM FOR FULL ACCESS
Upgrade anytime to unlock:
- Unlimited favorites
- Advanced search by architect, era, style, or region
- Complete access to thousands of unbuilt projects
- No ads
- Support independent architectural research
ABOUT UNBUILT WORKS
Unbuilt Works provides educational analysis, architectural commentary, and documented historical research on projects that influenced design—despite never being built.
Explore how these ideas shaped cities, movements, and modern architecture.
Download for free and start discovering the world that could have been.
What if they built it?
Terms of Use:
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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What's New in Version 1.0.4
Swipe through multiple project images in the full-screen viewer
Simplified notification settings
The developer, Brett Cassidy, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Contact Info
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Brett Cassidy
- Size
- 41.3 MB
- Category
- Education
- Compatibility
Requires iOS 13.4 or later.
- iPhone
Requires iOS 13.4 or later. - iPod touch
Requires iOS 13.4 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- Languages
- English
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Premium Yearly $39.99
- Premium Monthly $4.99
- Copyright
- © 2026 Unbuilt Works