The Most Impressive Glaciers in the World
A handful of glaciers transcend geography to become landmarks — through sheer scale, accessibility, colour, or the spectacle of ice breaking into water in front of a viewing platform. These are the ones that anchor entire trips.
Perito Moreno, Argentina
The most famous viewpoint glacier on Earth. A 5 km-wide, 70 m-high calving wall meets Lago Argentino directly in front of a tiered boardwalk; ice the size of houses falls into the water on a schedule most days. Rare among major glaciers in being roughly stable rather than retreating.
Vatnajökull, Iceland
Europe's largest glacier by volume, covering 8% of Iceland. Outlet tongues spill in every direction; in winter, guides excavate blue ice caves under its flank that have become Iceland's signature image.
Jostedalsbreen, Norway
Mainland Europe's largest glacier, sending more than 50 named arms down into the fjord country. Briksdalsbreen and Nigardsbreen are the headline viewpoints, both reached by easy valley walks.
Aletsch, Switzerland
The Alps' longest glacier at over 20 km, a great pale river of ice viewable from cable-car stations on the Jungfrau ridgeline. A UNESCO World Heritage site and the textbook image of an Alpine glacier.
Baltoro, Pakistan
A 63 km Karakoram giant flanked by K2, Broad Peak, and the Gasherbrums. The trek to Concordia, where Baltoro meets its tributaries beneath four 8,000-metre peaks, is one of the great expeditions on Earth.
Siachen, India / Pakistan
At roughly 70 km, the longest glacier outside the polar regions — and the highest battlefield on Earth, which is why almost no civilians ever see it. Its scale is on a different order to anything in Europe.
Margerie Glacier, Alaska
A 350 m-tall tidewater wall at the head of Glacier Bay, the showpiece of the cruise-ship calving circuit. The ice cliff rises higher than most buildings and calves several times an hour in summer.
Franz Josef and Fox, New Zealand
Twin temperate-rainforest glaciers descending almost to sea level on the West Coast — extraordinary because they end in lush forest, not tundra. Both are now helicopter-access only after sustained retreat closed the valley walks.
Lambert, Antarctica
The largest glacier on the planet. Roughly 100 km wide, 400 km long, drains a huge chunk of East Antarctica into the Amery Ice Shelf. Virtually no tourists ever see it; scale is incomprehensible from satellite imagery alone.
Jakobshavn (Sermeq Kujalleq), Greenland
The fastest-moving glacier on Earth, advancing tens of metres a day and calving the iceberg believed to have sunk the Titanic. The icefjord at Ilulissat is a UNESCO site and the best place on Earth to watch a working ice factory.
What "impressive" really buys you
Scale and accessibility rarely align. Perito Moreno is the spectacle anyone can see; Baltoro and Lambert demand expeditions or scientific stations. The glaciers most worth your trip are the ones you can actually stand near safely — and increasingly, the ones you should visit soon, because every single glacier on this list is changing measurably year by year.
See them on the map
Many of these are on the interactive map. Use it to anchor a glacier pilgrimage — Iceland's south coast, Norway's fjords, the Patagonian ice fields — around the ice that defines what a glacier can be.