The number four is unlucky in many East Asian cultures because it sounds like the word "death". It is not uncommon for buildings to "skip" the fourth floor, and for addresses and phone numbers to avoid the number when possible.
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Eight is the luckiest number in Chinese culture because it sounds like a word meaning "to generate wealth". The Beijing Olympics started at 8:08:08 on 8/8/2008. Phone numbers with lots of 8's in them sell for a premium price.
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The northernmost point of Canada is closer to Moscow than it is to Canada's southernmost point.
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Pheasant Island is a small river island on the Spanish-French border. Instead of splitting the island in half, the two countries alternate ownership every sixth months.
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The grapefruit happened by accident when pomelos and oranges were planted near each other. It was originally known as "forbidden fruit".