Eastern Thailand GuideEastern Thailand comprises the seven provinces that lie south of Isaan and east of the Central Plains, sandwiched between Bangkok and Cambodia. Eastern Gulf CoastThe closest beach resorts to Bangkok, this region is an absolute tourist magnet. HotelsFind hotels in Pattaya, Ko Samed, Ko Chang, Koh Kood, Chanthaburi and more. PattayaPattaya is a seaside resort on the Eastern Gulf Coast of Thailand, about 150 km southeast of Bangkok. Ko SametKo Samet, also spelled Koh Samed, is a small island off the Eastern Gulf Coast, within easy reach of Bangkok and Pattaya. Ko ChangKo Chang is an island in Trat Province, Eastern Thailand. Ko Chang is Thailand's second largest island, and the biggest in eastern Thailand. Eastern Gulf CoastThe Eastern Gulf Coast is a popular beachside resort in Thailand and the closest one to Bangkok. Trat ProvinceTrat Province is a popular travel region in Eastern Thailand, mostly for Ko Chang and the surrounding islands. Inner Eastern ThailandInner Eastern Thailand is a mountainous region in Thailand, close to the border with Cambodia.