World
The world’s tallest skyscraper would have 800 floors, reach 2.5 miles high and house 1m
Posted: January 2, 2026 at 9:19 pm / by / comments (0)
The X-Seed 4000 was designed in 1995 to be the tallest building in the world – but it was never actually built and here’s what we know about the project
Daily Express :: World Feed
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