Wherio #39 — August 20th, 2026
Five real historical events. Guess where each one happened, then compare your score with the answers and locations below.
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Try all five events before revealing the answers.
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1. One side of a two-country waterfall system becomes a national park.
Answer: 🇦🇷 Argentina · 1934
Iguazu Falls straddles a border, and this park protects the Argentine side.
2. South America hosts its first Olympic Games in a famous Atlantic coastal metropolis.
Answer: 🇧🇷 Brazil · August 5th, 2016
Rio's Olympic cauldron was lit beneath a kinetic metal sun.
3. A ten-day war ends with a small alpine state free.
Answer: 🇸🇮 Slovenia · 1991
Slovenia broke away from a collapsing Yugoslavia with few casualties.
4. Angkor is abandoned as a capital.
Answer: 🇰🇭 Cambodia · 15th century
Angkor's decline followed prolonged drought and war.
5. An astronomer proposes a 100-degree temperature scale.
Answer: 🇸🇪 Sweden · 1742
Celsius originally put boiling at 0 and freezing at 100.
More historical events
- A calving blue glacier descending from the southern Patagonian ice field becomes the heart of a national park east of the Andes.
- A 67-metre obelisk is raised in nine weeks in a capital on the River Plate.
- Welsh settlers found a colony in the Chubut valley of eastern Patagonia.
- An accidental voyage descends the world's greatest river.
- A 1,500-room baroque palace is completed for the tsars on Baltic marshes.
- Delegates from thousands of islands between the Indian and Pacific oceans pledge one homeland, one nation, and one language.