Bangkok is the official name for capital city of Thailand, but it is actually called by Thais as "Krungthep", meaning the city of angels. This Thai name of the city is just the short one, since its real name is so long that Those who tell you the real name once might not be able to repeat the same thing to you.
Krungthep Mahanakhon Amorn Rattanakosin Mahintara Yudthaya Mahadilok Pohp Noparat Rajathanee Bureerom Udomrajniwes Mahasatarn Amorn Pimarn Avaltarnsatit Sakatattiya Visanukram prasit