Which parts of Bangkok would not be show in tourist brochures?

Parts of Bangkok that may not be highlighted in tourist brochures include the city's sprawling slums, such as Khlong Toei, where visitors can observe the stark contrasts of urban life. Local markets and street food stalls in less-touristed neighborhoods, like Bang Kachao, offer authentic experiences away from the typical tourist spots. Additionally, areas like the old railway tracks and lesser-known temples can provide a glimpse into the everyday lives of locals, far removed from the city's major attractions.