Sci-Fi Fortress of Skyscrapers to Surround & Defend Japan

This is a conceptual project with a breathtaking scope: to create a perimeter of citadels surrounding Japan, protecting the island nation above, on and below the ground.

What was the most well-designed castle keep/donjon from a defensive standpoint? - Quora

9 Myths About Medieval Moats and the Truth Behind Them

The Development Scene: The Latest Info on 88 Downtown Projects, News

World's tallest wooden skyscraper planned in Tokyo

fortress mega structure city - Playground

A Futuristic Japanese high-rise cityscape, rendered by, Stable Diffusion

A Futuristic Japanese high-rise cityscape, rendered by, Stable Diffusion

Wargame News and Terrain: DecoQuest Workshop: The Grimness Fortress, 3D Printable STL Files Kickstarter!

Case Studies - Highways Today