North Korean Embassy is located at Street 268 (Suramarith), close to Independence Monument.
If you want to travel to North Korea, you will a visa which you can apply for at the Korean Embassy, during Monday to Friday 8:00-12:00 and 14:00-18:00. It takes approximately four working days to get a visa but you can pay more to get it in express.
If you need any other or more information you can contact the Embassy by phone 855-23-217-013 and 855-15-912-567.