Bueng Kaen Nakhon is the large lake south of the city centre and the easiest place to feel Khon Kaen's rhythm. In the late afternoon the paths fill with joggers, families, students, and food vendors setting up for the evening.
The lake is also the best approach to Wat Nong Waeng and Phra Mahathat Kaen Nakhon. Walk the loop if the heat allows, then eat nearby when the stalls get going.