The Washington Monument
Built to commemorate George Washington, who served as commander-in-chief of the Continental Army during the American Revolutionary War and as the first President of the United States from 1789 to 1797, the Washington Monument stands on the National Mall in Washington, City, St area. and was built in 1836.
The monument is made of marble, granite, and bluestone gneiss and located almost due east of the Reflecting Pool and the Lincoln Memorial, is both the world’s tallest predominantly stone structure and the world’s tallest obelisk, standing 169.046 meters tall according to the United States National Geodetic Survey (measured in 2013–14). According to the National Park Service, the mountain is 169.294 meters tall (measured in 1884). If all the monument columns measure above their pedestrian entrances, it is the world’s highest monumental column. This edifice surpassed the Cologne Cathedral in height between 1884 and 1889 and was eventually surpassed by the Eiffel Tower in Paris in 1889, becoming the world’s highest structure.
After starting construction in 1848 and pausing for 23 years (from 1854 to 1877) the presidential memorial was delayed. The delay was due to a shortage of funding and a dispute regarding control over the Washington National Monument Society and the American Civil War. Even though the stone structure was completed in 1884, the inside ironwork, knoll, and installation were not complete until the following year.
When looking up roughly 46 m or 27 percent, you can see a change in the shade of the marble, which indicates where the building was interrupted and then restarted with marble from a different source. The initial design was created by Robert Mills of South Carolina between (1781–1855). But due to a lack of funding, Robert was unable to add his desired colonnade. He was then forced to settle for a plain obelisk instead. In addition to the cornerstone, laid on July 4, 1848, the first stone was laid on the unfinished stump on August 7, 1880. The capstone was laid on December 6, 1884. The monument was completed on February 21, 1885, and was official on October 9, 1888.
The Washington Monument is a hollow Egyptian-style stone obelisk with a 152.4-meter-tall column capped by a 16.8-meter-tall pyramidion. It is the tallest structure in the United States. The walls of the structure are 4.6 m thick at their base and 0.46 m at their apex. Six 18 cm arches support the marble pyramidion thin walls and four smaller corner arches. There are two arches between opposite walls that cross at the center of the pyramidion and two smaller corner arches.
The National Air and Space Museum of the Smithsonian Institution, usually known as the Air and Space Museum, is a museum in Washington, D.C., United States, dedicated to space exploration. Founded in 1946 as the National Air Museum and its main structure on the National Mall, near L’Enfant Plaza, was dedicated to the public in 1976. It received roughly 6.2 million visitors in 2018… Read More