From gravity-defying cities to sky-high pyramids, explore the world’s most ambitious megastructures that were never built. These visionary projects promised to reshape our future, from Japan’s Shimizu ...

Throughout the 1960s and ’70s, starry-eyed architects set their minds to megastructures – massive, multi-purpose designs that could house communities or even entire cities. Complex and expensive to ...

A voyage on the Atlanta, a 134,000-ton "megaship" operated by the Orient Overseas Container Line. Footage of the Atlanta, which began sailing in 2005, is shown as it negotiates its way through the ...