I initially went to Pak Chong from Bangkok but there was almost nothing there. Although, I liked the surrounding because I only saw 4 tourists there. I went passed a market to check the schedule of the van to Korat the next day. The locals in the market were very willing to help me to find the station (a very small station) even though they had a hard time communicating in English.
I went to the station of the van the next day around 8:15AM. The fare was 60 baht. I got dropped off in front of the famous The Mall around 9:30AM. I walked to find my target hostel which is Sansabai House with the help of my awesome CityMaps2Go app. I got a very nice room for 450 baht per night.
After I checked in, I walked back to The Mall just to check it out. They have this beautiful man-made waterfall upfront.
I then went to Safe One night market as suggested by my Thai friend Nitty.
The next day, I took a bus to Phimai to check the Phimai Historical Park. The fare was 70 baht and it took about 2 hours. They said and apparently this is a Kmer (Cambodian) Temple.
The entrance fee was 100 baht. All stones but beautiful. Worth checking out when it Korat.