Two different places filed under one heading, and it is worth saying so at the top: this is not a district. Ari is a low-rise residential pocket off Phahonyothin that became Bangkok's densest specialty-coffee ground without ever becoming a place tourists go to look at anything — Thai professionals, government workers, young families, short leafy sois, and no sights at all. Dusit, several kilometres and a mood away, is Rama V's European experiment: ceremonial boulevards, a marble temple, a bronze king on a horse, and a royal quarter that is now largely shut to the public. Between them sits Chatuchak, where 15,000 stalls and the city's best fresh market pull more visitors in two days than everything else here manages in a month. What actually joins them is a line on a map — the BTS Sukhumvit line and the road it follows north.
Who it's for: People who want to eat and drink coffee where Bangkok actually lives rather than where it performs, and who will happily spend a morning in a neighbourhood with nothing to photograph. Anyone doing Chatuchak properly, who should treat Ari as the base rather than commuting in from Sukhumvit. Repeat visitors. Anyone who found Rattanakosin's temple circuit crowded and wants the smartest temple in the city with a tenth of the people. Muay Thai fans who want the founding stadium rather than an arena show.