- Loei City is the capital city of Loei Province in northeastern Thailand. It is located in the Mekong River Valley and is known for its scenic landscapes, mountains, and natural attractions. The city has a population of around 35,000 people. The main attractions in Loei City include Phra That Si Song Rak, a famous Buddhist temple, Phu Rua National Park, and Chiang Khan Old Town. The city also hosts the annual Phi Ta Khon Festival, which is a colorful and lively ghost festival celebrated by the local people. Loei City is a popular destination for nature lovers and those seeking a peaceful and quiet retreat.