The Niagara Falls, in Canada, are a small group of waterfalls located on the Niagara River in eastern North America, on the border between the United States and Canada. Located about 236 meters above sea level, its fall is approximately 52 meters.
The Aurora Boreal, in Alaska, is a phenomenon in the form of brightness or luminance that appears in the night sky, usually in polar areas, but may appear elsewhere in the world for short periods of time.
The Barrier Reef, in Australia, is the largest coral reef in the world. The reef is located in the Coral Sea, off the coast of Queensland in northeast Australia, southeast of New Guinea and south western Papua New Guinea. The reef, which lies about 2600 km in length, can be distinguished from space.
The Teide, in Tenerife (Spain), with a height of 3,718 meters above sea level and more than 7,000 feet above the ocean floor, is the highest peak in Spain, any landmass in the Atlantic Ocean and the third largest volcano on Earth from its base, then Mauna Loa and Mauna Kea, both on the island of Hawaii.