Most area in this region is plain and short hills and connected to sea (Gulf of Thailand) with a Phranom Dongrak mountain range bordered between Thailand and Cambodia. There are many beautiful beaches as Pattaya beach and islands as Koh Chang, Koh Samed, Koh Mandt and Koh Lan.

Main economic is agriculture (fruits) such as Durian, Rambutan and mangosteen including rubber tree and fishery . They sell fresh aquatic animals or foods or transform to products. Moreover, some area in each province are industrial estate and jewelry source as well.