When you saunter around Bangkok, you will see many Thais strolling leisurely in sandles. This may give the initial impression that Thais are overly informal. But look at their shirts; they often dress in button down shirts or short-sleeved collared shirts. Intense heat maybe the reason for so many sandal-wearing Thai locals. One thing is for certain, however: being clean and respectful is paramount in the Thai culture. And, their respect arises from their deep respect for Buddha. Part of the respect is dressing decently. That means, cover yourself up in Bangkok and don't go around shirtless. You can not enter the Grand Palace without shoes.

Bangkok was founded by King Rama I. As the capital of Thailand, Bangkok lies at the southwest border of Thailand, serving as a busy international hub. Bangkok is also a true metropolitan city with high rise buildings and a sinewy highway system. As far as tourism goes, Bangkok's got it all: quaint and countless tourist attractions, shopping and great tailors, eating, nightlife, inexpensive hotels - you name it. To top it all off, the Thai people in Bangkok are more welcoming and have a greater sense of hospitality than countries like China and Korea. Remember though, Bangkok is hot.
You only need a passport to enter Thailand.

Layout
Bangkok is a fairly large city geographically. Here are some of Bangkok’s major districts. The Chao Phraya River runs directly through the city center. Starting from the west of Chao Phraya River is Riverside. Bangna Trad is also west of the river but south of Riverside. To the east of the river lies the rest of the major districts. Siam and Silom are located directly across the river from Riverside. Ratchadapisek lies on the northeast of the city center above Siam. Sukhumvit is slightly southeast of Ratchadapisek.
The northern part of Riverside, which straddles the Chao Phraya River, Siam and Sukhumvit, both of which lie east of the river, are the main tourist areas. Here, you'll find Koa san Road, the backpackers area, the Grand Palace and much more.

Language
Of course, most of the Thai people speak Thai. However, bits and pieces of English in tourist areas and hotels make getting around fairly easy.

Times to Go
Low Season: Summer months, rainy season
High Season: November – March, dry season