Thirteen interesting facts about the number 13
1. Hospitals and hotels regularly have no room number 13.
2. Many cities don't have a 13th Street or a 13th Avenue. This city tempted fate.
3. If you have 13 letters in your name, you're said to have the devil's luck. Like, this guy (Charles Manson).
4. Many airports skip the 13th gate.
5. Airplanes have no 13th aisle.
6. Italians omit the number 13 from their national lottery.
7. More than 80% of high rises lack a 13th floor.
8. On streets in Florence, Italy, the house between number 12 and 14 is addressed as 12 and a half.
9. Traditionally in hangings, there are 13 knots in the noose and 13 steps leading up to the moment of death.
10. French President Nicolas Sarkozy may know that in France, socialites called quatorziens (fourteeners) make themselves available as 14th guests to keep a dinner party from an unlucky fate.
11. Many say the No. 13 pointed to the ill-fated mission to the moon, Apollo 13.
12. Tarot Card number 13 is the Death Card, depicting the Grim Reaper.
13. Some say that the Babylonian Code of Hammurabi (circa 1780 B.C.E.) is to blame for the No. 13 woes since the 13th law is omitted.
More Miscellaneous Facts
1. Sandals originated in warm climates where the soles of the feet needed protection but the top of the foot needed to be cool.
2. 4,000 years ago the first shoes were made of a single piece of rawhide that enveloped the foot for both warmth and protection.
3. In Europe pointed toes on shoes were fashionable from the eleventh to the fifteenth centuries.
4. In the Middle East heels were added to shoes to lift the foot from the burning sand.
5. In Europe in the sixteenth and seventeenth centuries heels on shoes were always colored red.
6. Shoes all over the world were identical until the nineteenth century, when left- and right-footed shoes were first made in Philadelphia.
7. In Europe it wasn't until the eighteenth century that women's shoes were different from men's.
8. Six-inch-high heels were worn by the upper classes in seventeenth-century Europe. Two servants, one on either side, were needed to hold up the person wearing the high heels.
9. Sneakers were first made in America in 1916. They were originally called keds.
10. Boots were first worn in cold, mountainous regions and hot, sandy deserts where horse-riding communities lived. Heels on boots kept feet secure in the stirrups.
11. The first lady's boot was designed for Queen Victoria in 1840.
1. "Skyscraper" originally was a nautical term referring to a small triangular sail set above the skysail on a sailing ship. It is first applied to buildings of steel frame construction in late 19th century where building highrises began.
2. Supertall skyscraper is defined as a functional and habitable building with height over 300 m, as the number of buildings exceeding such height is considered very low around the world. The change to the height from 300 m to a number much higher (like 400 m) to be placed in 'supertall' category would be suggested in near future when more and more supertall skyscrapers are being built.
3. Burj Khalifa which is the current (in 2011) world tallest completed building stands at a height of 828m, which is almost double of the minimum height for a specific building to be placed into top 10 world tallest buildings' list. (current 10th place goes to Trump International Hotel and Tower at a height of 423m)
4. Despite Burj Khalifa is the tallest building, Shanghai World Financial Center still hold the record of world tallest observation deck at a height of over 470m at 100th floor. Burj Khalifa just took the title of world tallest OUTDOOR observation deck at a height of 452m at 124th floor.
5. Petronas Twin Towers at the height of 452m are still the current world tallest twin buildings despite losing the title of world's tallest building over 8 years ago to Taipei 101.
6. Taipei 101 stands at a height of 508m, is the first building in the world to reach over 500m, half a kilometre mark, which also becomes the world tallest building from 2003 till 2009, being overtaken by Burj Khalifa.
7. Ten years ago, there are only 4 buildings in the world that measure over 400m. Currently, including the topped out buildings, there is a total of 12 buildings exceeding that height. So, probably ten years later, the number could easily be over 30.
8. Empire State Building took only 410 days (less than 14 months) to build, back over 80 years ago, in 1930s as the world tallest building at a height of 381m. That is the fastest record of construction for a building with such a height and in that particular time when technology and height are the major resistances.
9. Ten years ago, there are only 26 skyscrapers known to be supertall (exceeding 300m). Now, the number is even more than double; 54 with mainly new buildings coming up from Asia (China and Dubai particularly). 'Rise of the East'.
10. There are only 4 cities in the world with more than 5 buildings exceeding 300m (supertall skyscrapers). The cities are Dubai, Hong Kong, Chicago and New York City.
11. Dubai, United Arab Emirates is currently the city with the most supertall skyscrapers with minimum of 10 buildings in the category. The record would be remained for a long time due to rapid construction activities in Dubai.
12. The first building in history that exceeds 300m (to be called as supertall skyscraper) is Chrysler Building which stands at a height of 319m and is built in 1930, over 80 years ago.
13. The current world tallest concrete building is Trump International Hotel and Tower at Chicago which stands at a height of 423m including its spire, defeating the previous title holder, CITIC Plaza at Guangzhou which is only at 391m.
14. There are currently less than 10 completed buildings around the world with over 100 floors. (To be exact, only 9).
15. The official list in measuring building's height is based on the measurement to the highest architectural detail that includes spire but not antenna. This is why Petronas Twin Towers obtained the title of world tallest buildings from Sears Tower (now renamed Willis Tower) back in 1997. Willis Tower at that time is still the tallest to top of roof, tallest to top of antenna, and tallest to highest occupied floor.
16. Burj Khalifa does not only hold the record of world tallest building, but also several many others especially the world tallest man made structure.
17. The Western world had hold the record of world tallest building for over a century (since the introduction of steel frame construction that enable highrises), until it is being taken by Asia beginning 1998, and until 2009 by Middle East.
18. The Shard is currently an under-construction building which will be the tallest in European Union with a height of only 310m, the first one in the region to be called as 'supertall skyscraper'.
19. There are a total of 7 all-hotel buildings which exceed 300m, of which the top 6 tallest are all in Dubai, with the last one at a height of 304m, located at Bangkok, Thailand called as Baiyoke Tower 2.
20. The first building in history that has over 100 floors is Empire State Building, which has a total of 102 floors, built in 1931.
The color blue has a calming effect. It causes the brain to release calming hormones.