- Rattanakosin
- The royal island the city was founded on in 1782: the Grand Palace, Wat Pho and the old ministries inside a moat that still traces the original wall line. Wide, formal and low-rise by law.
- Chinatown
- One road, Yaowarat, and the warren of lanes off it: gold shops by the dozen, Teochew shrines, and a stretch of street food that gets going properly after dark. The Chinese who settled this bank were moved here to clear the ground for the new palace in the 1780s, and they never really left.
- Thonburi
- The west bank, and the older capital before this one — Bangkok's quieter, more residential half, where the khlongs still work as streets and Wat Arun rises out of the houses along the water. Cross by ferry rather than the bridges to see it the way it is actually used.
- Banglamphu
- Old wooden shophouses and the Khao San Road backpacker strip sit inside the same few streets, a short walk from the palace. Khao San gets loud after dark; the temples and the canal-side lanes around it stay exactly as quiet as they were before it existed.
- Sukhumvit
- The long modern spine east of the centre, one road and a Skytrain line running its whole length, packed with newer towers, malls and a restaurant scene that runs through most of the world's cuisines. It reads as a different city from the old one on the river, laid out for cars and the BTS rather than for a boat.
- Silom and Sathorn
- The financial district by day — banks, embassies, the tallest towers south of the old city — and a different place after 6 in the evening, when the office crowd leaves and street stalls and bar strips take over the same pavements. The Sathorn side holds most of the consulates; Silom holds most of the noise.