The world's tallest skyscraper would have 800 floors, reach 2.5 miles high and house 1m

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 ...

'World's tallest, fastest and longest' coaster opens at new Six Flags

Six Flags unveiled the "world's tallest, fastest and longest roller coaster." But you'll need a passport to ride it. Falcons ...
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3D skyscraper comparison: mind-blowing heights

From a tower with the largest clock on Earth to a mind-bogglingly tall building that holds 7 world records, this video presents a 3D comparison of the tallest skyscrapers on the planet. It features ...

World’s tallest, fastest roller coaster opens — and it can be seen from space

A new roller coaster is redefining what “extreme” means, breaking global records for height, speed and length. Six Flags ...

Six Flags Opens the Tallest, Fastest and Longest Roller Coaster in the World

The world's tallest, fastest and longest roller coaster is officially open at Six Flags Qiddiya City in Saudi Arabia. The ...