29°58′34″N 31°7′58″E. The Great Pyramids of Giza are located on the outskirts of Cairo, Egypt. Dating back to 2580 BC, the Great Pyramid, the largest structure at the site, is the oldest of the Seven Wonders of the Ancient world and the only one to remain largely intact. With an estimated 2,300,000 stone blocks weighing from 2 to 30 tons each, the 481 foot pyramid was the tallest structure in the world for more than 3,800 years.
Central Park, New York City, New York, USA
40°46’56”N; 73°57’55”W. Central Park in New York City spans 843 acres. That’s 6% of the island of Manhattan.
Norfolk, Virginia, US
Train cars filled with coal are stationed in Norfolk, Virginia. Operated by the Norfolk Southern corporation, Lamberts Point Pier 6 is the largest coal-loading station in the Northern Hemisphere and serves at the temporary depot for the company’s fleet of 23,000 coal cars.
Salt Ponds, San Francisco Bay, California, USA
37.5106531, -122.053325. The salt evaporation ponds seen here cover roughly 10 square miles (26 square km) in San Francisco Bay, California, USA. Salt is extracted from the water here through a lengthy process. First, water from the bay is channeled into massive basins where it begins a transformation into brines. Over five years, the brines evaporate, concentrate, and travel several miles before they are collected as pure salt crystals. The massive ponds get their vibrant color from a particular species of algae (Dunaliella) that thrives in extremely salty water and produces a red pigment.
