Engine coolant temperature sensor location

Hello,
So I have been having an issue with my car overheating. And I have found out there could be three reasons as to why it is. I have replaced two of the three parts it could have been but they did not fix the issue. The last part I need to replace is the engine coolant temperature sensor, however I do not know where it is located and cannot seem to find it. The other two parts I have replaced are the thermostat and the radiator fan. Which the fuse in my fan had gone out, so it was a good thing I got that done. If I could get some help that would be greatly appreciated. ^-^