The city of Bangkok, Thailand
Addresses in Bangkok use the Thai addressing system, which may be a little confusing to the uninitiated. Large roads such as Silom or Sukhumvit are thanon, often abbreviated Th or glossed Road/Avenue, while the side streets branching off from them are called soi. Sois are numbered, with even numbers on one side and odd ones on the other. Thus, an address like 25 Soi Sukhumvit 3 means house/building number 25 on the 3rd soi of Sukhumvit Road. While the soi numbers on each side will always advance upward, the numbers often do not advance evenly between sides - for example, Soi 55 could be across from soi 36. Many well-known sois have an additional name, which can be used instead of the number. Soi 3 is also known as Soi Nana, so the address above might thus also be expressed as 25 Soi Nana. The extension /x is used for new streets created between existing streets, as seen in Sukhumvit's soi pattern 7, 7/1, 7/2, 9, 11. Note that some short alleys are called trok (ตรอก) instead of soi. To make things a little more complex, some large sois like Soi Ekamai (Sukhumvit Soi 63) and Soi Ari (Phahonyothin Soi 7) have their own sois. In these cases an address like Soi Ari 3 means the 3rd soi off Soi Ari, and you may even spot addresses like 68/2 Soi Ekamai 4, Sukhumvit 63 Road, meaning 2nd house beside house 68, 4th soi off Ekamai, the 63rd soi of Sukhumvit. In many sois the house numbers are not simply increasing, but may spread around. To further bewilder the tourist who doesn't read Thai, the renderings of Thai street names in the Latin alphabet are not consistent. The road running towards the (former) airport from the Victory Monument may be spelled Phahon Yothin or Pahon Yothin or Phahonyothin or Phaholyothin depending on which street sign or map you consult. It's all the same in Thai, of course, only the romanisation varies. And if that's not confusing enough, most of the larger streets tend to change names altogether every few kilometers. Sukhumvit is called Sukh