The Central Thailand is made up of 22 provinces and Bangkok is one of them. Geographically, this is Thailand's heartland, extending from Lop Buri in the north and covering the rice bowl of the Central Plains around the Chao Phraya River. The 22 provinces that comprise the Northeast are Ang Thong, Bangkok, Chachoengsao, Chai Nat, Kanchanaburi, Lop Buri, Nakhon Nayok, Nakhon Pathom, Nonthaburi, Pathum Thani, Phetchaburi, Phra Nakhon Si Ayutthaya, Prachin Buri, Prachuap Khiri Khan, Ratchaburi, Sa Kaeo ,Samut Prakan, Samut Sakhon, Samut Songkhram, Saraburi, Sing Buri and Suphan Buri.