Iguazu Falls or Iguassu Falls located in the middle of the rain forest on the border between Argentina (80%) and Brazil (20%), is a natural wonder registered as World Heritage by UNESCO in 1984.
The peculiarity of the Ha Long Bay is its multitude of rocky peaks. There are 1,600 islands and rocky islands, with many creeks. Some islets are dug caves, the most famous are the Cave of Surprise and the one named by the French - Cave of Wonders. Other caves lead to inland lakes. The set is the largest marine karst in the world.
Palau is located in western Oceania, mainly in the Philippine Sea, with the Puro Islands, Melieli, Hatohobei and Helen Reef Atoll in the Pacific Ocean. The capital Melekeok is 445 km away west-southwest of Yap, one of the Federated States of Micronesia, 997 km east of Davao, on the island of Mindanao (Philippines) and 1,481 km southwest of Saipan at the Marianas of North.
According to ancient Chinese historical records, in the 3rd century AD, Jeju Island was an independent kingdom called Tamna. At that time Tamna had established trade relations with the three Han States on the Korean Peninsula. From the 5th to 9th centuries, Tamra also established trade relations with the kingdoms of Goguryeo, Silla, Tang Dynasty and Japan. In 1105, Tamra was absorbed in the territory of the Goryeo Dynasty during the reign of King Gojong(enthroned 1215-1259) and renamed Jeju.
The Great Barrier Reef is considered the largest of the large living structures on Earth. It is sometimes called the largest living animal in the world. In fact, it consists of many colonies of corals. Because of its vast biodiversity. The reef is a very popular destination for aquatic underwater divers. For Australians and surfers, the thousands of islands, islets and atolls making up the Great Barrier Reef are the 8th wonder of the world.
The Belize Barrier Reef is a group of coral reefs and cays located off Belize in the Caribbean Sea. It is one of the largest coral reefs in the world after the Great Barrier Reef in Australia and the lagoons of New Caledonia.
The Great Blue Hole is an underwater collapse pit off the coast of Belize. The hole is located near the Lighthouse Reef center, a small atoll that is 70 kilometers (43 mi) from mainland and Belize City. Holes in a circular shape, more than 300 meters (984 ft) across and within 124 meters (407 ft). This hole formed during several Quaternary glaciation events when sea levels were much lower - an analysis of the discovery of stalactites in the Great Blue Hole showed the formation that had occurred 153,000, 66,000, 60,000 and 15,000 years ago.
Puerto Princesa Underground River National Park is a protected area located 80 kilometers north of Puerto Princesa City, Palawan, Philippines. In 2010, a group of environmental activists and geologists discovered that this underground river had a second floor, indicating that there was a small waterfall inside the cave. They also found a cave dome measuring 300 m above the underground river. The deeper area of the underground river is almost impossible to explore because of low oxygen levels.