Longest officially recognized place name is Taumatawhakatangihangakoauauotamateapokaiwhenuakitanatahu.
112
The Caspian Sea is also classed as the world's largest lake.
52
The water between India and Sri Lanka is only 3-30 feet deep and was purportedly passable on foot until 1480 AD when a cyclone moved some sand around.
1
The Atlantic Ocean is saltier than the Pacific Ocean.
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It's still possible to see the division between East and West Germany due to different light bulbs.
5
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
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Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8