Lopburi is a three hour train ride north of Bangkok. My friend and I took the slower train which only cost us 28 Baht (32 Baht = 1 Dollar). Not too shabby! (However, the faster train is still pretty cheap by American standards so if you want to be in a nicer train and spend more time in Lopburi then go for it!)
Lopburi is home to the famous Monkey Temple and sunflower fields perfect for Instagram. Lopburi is a small town which can easily be covered in one day.
Monkeys and Monkey Temple
Going to the Monkey Temple was a mixed bag for me. It will cost you 50 Baht which is pretty reasonable; however, the temple itself is quite small. Furthermore, it is in the middle of town so it comes across as even more of a touristy location. Combine that with the trash littered throughout (vendors sell food and some sort of red liquid in plastic bags for tourists to give the monkeys) and the fact that you can see the monkeys pretty much anywhere in town makes this an okay-ish spot rather than what I had built it up in my head. Still worth checking out I think, but just keep your expectations in check.