Sekong province in the context of Attapeu province

Huế, formerly Thừa Thiên Huế province, is the southernmost coastal city in the North Central Coast region, approximately in the center of the country, and an educational, medical, scientific, and cultural hub of Vietnam. It borders Quảng Trị to the north, Đà Nẵng to the south, Salavan and Sekong of Laos to the west and the South China Sea to the east. As one of the country's six direct-controlled municipalities, it falls under the administration of the central government.

Huế has 128 km of coastline, 22,000 ha of lagoons and over 200,000 ha of forest. The city is located in the middle of the North Central and South Central regions (including the South Central Coast and Central Highlands), and is transitional in many aspects: geology, climate, administrative division and local culture.

Huế, formerly Thừa Thiên Huế province, is the southernmost coastal city in the North Central Coast region, approximately in the center of the country, and an educational, medical, scientific, and cultural hub of Vietnam. It borders Quảng Trị to the north, Đà Nẵng to the south, Salavan and Sekong of Laos to the west and the South China Sea to the east. As one of the country's six direct-controlled municipalities, it falls under the administration of the central government.

Huế has 128 km of coastline, 22,000 ha of lagoons and over 200,000 ha of forest. The city is located in the middle of the North Central and South Central regions (including the South Central Coast and Central Highlands), and is transitional in many aspects: geology, climate, administrative division, and local culture.

Quảng Ngãi (Vietnamese pronunciation: [kwâŋ ŋǎjˀ]) is a coastal and mountainous province located in the South Central Coast and Central Highlands regions of Vietnam. The province borders Da Nang to the north, Gia Lai to the south, and the South China Sea to the east. It also borders the Lao provinces of Sekong and Attapeu and the Cambodian province of Ratanakiri to the west.

The province's administrative is Cẩm Thành Ward, located 130 km south of Đà Nẵng, 820 km north of Hồ Chí Minh City, and 908 km south of Hà Nội along the National Route 1. Quảng Ngãi has a 129 km coastline with a territorial sea of 11,000 km (4,200 sq mi).

Champasak (or Champassak, Champasack – Lao: ຈຳປາສັກ [t͡ɕàm pàː sák]) is a province in southwestern Laos, near the borders with Thailand and Cambodia. It is 1 of the 3 principalities that succeeded the Lao kingdom of Lan Xang. As of the 2015 census, it had a population of 694,023. The capital is Pakse, and the province takes its name from Champasak, the former capital of the Kingdom of Champasak.

Champasak is bordered by Salavan province to the north, Sekong province to the northeast, Attapeu province to the east, Cambodia to the south, and Thailand to the west. The Mekong River forms part of the border with neighboring Thailand and contains Si Phan Don ('Four Thousand Islands') in the south of the province, on the border with Cambodia.