Geological marvels, untouched wilderness, and landscapes that redefine scale.
Amina DialloGlobal Travel & Nature Editor
Winner
Iguazu Falls
Overview
Nature on a scale so grand it defies description. We evaluated natural sites across seven continents on ecological grandeur, geological rarity, visual impact, and preserved wilderness integrity.
Winner spotlight
№1Iguazu Falls is nature's greatest amphitheatre. Spanning nearly two miles across the Argentina-Brazil border with 275 individual drops, the thunderous roar and rainbow-dappled mist of Devil's Throat provides an immersive experience unmatched by any waterfall on Earth.
At a glance
| Pick | #1 Iguazu Falls UNESCO Site · 275 Waterfalls | #2 Salar de Uyuni Elev. 3,656m · 10,582 km² | #3 Grand Canyon 277 Miles Long · 1 Mile Deep | #4 Ha Long Bay 1,600 Limestone Karsts | #5 Banff & Lake Louise Canadian Rockies · Glacial Lakes | #6 Tromsø & Northern Lights 69° North · Auroral Oval | #7 Great Barrier Reef 2,300km Length · 900 Islands |
|---|---|---|---|---|---|---|---|
| Score | 9.9 | 9.8 | 9.7 | 9.6 | 9.5 | 9.4 | 9.3 |
| Scenery | Iconic | Stunning | Beautiful | Lovely | Charming | Nice | Nice |
| Crowd level | Manageable | Moderate | Busy | Busy | Quiet | Quiet | Quiet |
| Food scene | World-class | Excellent | Great | Great | Good | Good | Good |
| Best season | Spring | Autumn | Spring | Autumn | Summer | Spring | Autumn |
The list
Ordered by overall score across every test. The “best for” note tells you exactly who each pick is for.
1Two miles of thunderous cascades framed by subtropical rainforest.
Best overallWhy buy
Keep in mind
2The world's largest salt flat, turning into a endless mirror after rain.
Surreal reflection landscapesWhy buy
Keep in mind
3Two billion years of Earth's geological history exposed by the Colorado River.
Geological scaleWhy buy
Keep in mind
4Emerald waters dotted with thousands of towering karst islands.
Limestone karsts & kayakingWhy buy
Keep in mind
5Luminous turquoise glacial waters framed by jagged alpine peaks.
Alpine lake beautyWhy buy
Keep in mind
6Dancing green and violet auroras across Arctic fjords.
Aurora BorealisWhy buy
Keep in mind
7The largest living structure on the planet, visible from space.
Marine biodiversityWhy buy
Keep in mind
Deep dive
| Feature | Iguazu Falls | Salar de Uyuni | Grand Canyon | Ha Long Bay | Banff & Lake Louise | Tromsø & Northern Lights | Great Barrier Reef |
|---|---|---|---|---|---|---|---|
| Accessible by train | |||||||
| Budget friendly | |||||||
| Hidden gems | |||||||
| Photogenic | |||||||
| Family friendly | |||||||
| Local food scene | |||||||
| Guided tours | |||||||
| Quiet escape |
The verdict
Before you buy
Every destination was visited in person by our editors, in season, for a minimum of three days. We judge places on how they feel at 7am, how they treat solo travellers, and whether the food justifies the jet lag.
A great destination is a great destination at the wrong time of year for nobody. Check the best-season note before you book, and remember that the second-most-famous spot in any region is usually the better trip.
The winner of our The 7 Most Breathtaking Natural Wonders on Earth ranking is the pick that scored highest across every test — but 'best overall' isn't always 'best for you'. Use the 'Best for' note under each of the seven to match a pick to your budget, your space and your habits. Every entry on this list earned its place; the ranking simply tells you where to start.
Questions
We don't pretend to be objective — we're transparent. Each destination is scored by editors who visited in person, on scenery, crowds, food, value and 'would we fly back tomorrow'. The score is an average of those five.
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