World's Largest

The name Wärtsilä has a definite glow around it in the motorhead community. That's largely because of the RTA96-C, a 14-cylinder, two-stroke turbo diesel behemoth that our own Mike Hanlon endorsed as one of the Seven Wonders of the World back in 2004.

The world's largest wooden structure has been completed. Aptly named the Grand Ring, it takes the form of a massive circular loop with a walkway on top and has a circumference of approximately 1.2 miles.

Some historic aircraft seem like a barrel for holding superlatives. One of these, the H-4 Hercules, goes one better because it's also at the center of one of the strangest stories involving possibly the 20th century's strangest man – Howard Hughes.

Mingyang Smart Energy said last week that it's installed “the world’s largest single-capacity offshore wind turbine” in a project in Hainan, China. The turbine delivers a power output of up to 20 MW, besting its previous 18 MW model from 2023.

Populous and Oualalou + Choi have joined forces to design an extraordinary new stadium that will take the form of a huge tent. The Grand Stade Hassan II will be located in Morocco and will be the largest soccer stadium in the world.

The world's largest single-capacity floating wind platform has set to sea and the builder released images of the operation. Mingyang’s OceanX is set to travel 191 nm (220 miles, 354 km) over the next three days to its final offshore destination.

Scientists have discovered the largest known protein in biology. Given the fun name of PKZILLA-1, the protein was found in algae cells and helps them make toxins that are responsible for mass killings of fish.

An ambitious underwater road and rail tunnel is currently under construction in Europe. Named the Fehmarnbelt tunnel, it will cross an 11.2-mile stretch of the Baltic Sea, linking Germany and Denmark.

Scientists have discovered the organism with the largest known genome. At 160 billion base pairs, it's 50 times bigger than the human genome, and the organism it’s describing is a tiny fern you wouldn’t even notice if you tripped over it on a hike.

A newly described species of marine reptile could be the largest to ever swim the world’s oceans. The “giant fish lizard” lived more than 200 million years ago, and may give the blue whale a run for its money, size-wise.

The 108-m (356-ft) long Radia Windrunner is designed to transport cargo too big for the road, to short, semi-prepared airstrips on rough terrain. It would dwarf the majestic 84-m (275-ft) long Antonov An-225 Mriya, which is sadly no longer with us.

Universal Hydrogen is already flying the world's largest hydrogen airliner – and now the company has started testing swappable liquid hydrogen fuel modules that'll radically boost the range of clean passenger aircraft operations slated for 2026.