Жүйсіз қырлы, жоғарыға қарай тартылатын тас шаңырақтар

Tall, four sided, narrow tapering monument which ends in a pyramid like shape at the top

An obelisk ('/ɒ//b//əl//ɪ//s//k/; from ὀβελίσκος obeliskos; diminutive of ὀβελός obelos, "spit, nail, pointed pillar") is a tall, four sided, narrow tapering monument which ends in a pyramid like shape or pyramidion at the top. Originally constructed by Ancient Egyptians and called tekhenu, the Greeks used the Greek term obeliskos to describe them, and this word passed into Latin and ultimately English. Though William Thomas used the term correctly in his Historie of Italie of 1549, by the late sixteenth century (after reduced contact with Italy following the excommunication of Queen Elizabeth), Shakespeare failed to distinguish between pyramids and obelisks in his plays and sonnets. Ancient obelisks are monolithic and consist of a single stone; most modern obelisks are made of several stones.

Obelisks were prominent in the architecture of the ancient Egyptians, and played a vital role in their religion placing them in pairs at the entrance of the temples. The word "obelisk" as used in English today is of Greek rather than Egyptian origin because Herodotus, the Greek traveler, was one of the first classical writers to describe the objects. A number of ancient Egyptian obelisks are known to have survived, plus the "unfinished obelisk" found partly hewn from its quarry at Aswan. These obelisks are now dispersed around the world, and fewer than half of them remain in Egypt. The earliest temple obelisk still in its original position is the red granite Obelisk of Senusret I of the Twelfth Dynasty at Al Matariyyah in modern Heliopolis. In Egyptian mythology, the obelisk symbolized the sun god Ra, and during the religious reformation of Akhenaten it was said to have been a petrified ray of the Aten, the sundisk. Benben was the mound that arose from the primordial waters Nu upon which the creator god Atum settled in the creation story of the Heliopolitan creation myth form of Ancient Egyptian religion. The Benben stone (also known as a pyramidion) is the top stone of the Egyptian pyramid. It is also related to the obelisk. It is hypothesized by New York University Egyptologist Patricia Blackwell Gary and Astronomy senior editor Richard Talcott that the shapes of the ancient Egyptian pyramid and obelisk were derived from natural phenomena associated with the sun (the sun god Ra being the Egyptians' greatest deity at that time). The pyramid and obelisk's significance have been previously overlooked, especially the astronomical phenomena connected with sunrise and sunset: Zodiacal light and sun pillars respectively.

Ancient Nubian kings of the twenty fifth Dynasty sought to legitimize their rule over Egypt by constructing Egyptianizing monuments in the Middle Nile region. Historical sources mention that king Piye built at least one obelisk. The obelisk was made of local black granite and was found at the site of Kadakol. It had been cut down to make it into a column, presumably for one of the early Christian churches in the area of Old Dongola. Today the obelisk is exhibited in the National Museum in Khartoum. The obelisk is inscribed with the kings official titulary: Strong bull, Appearing in Dominion (Thebes), King of Upper and Lower Egypt, Two ladies, Ruler of Egypt, Son of Rê, Pi(ankh)y: what he made as his monument for his father Amen Rê, lord of [ ]. An obelisk of King Senkamanisken was found at Gebel Barkal in 1916 by the Harvard University Museum of Fine Arts expedition to Sudan. There are remains of another small obelisk inscribed with the cartouche of King Aktisanes at the site of Gebel Barkal.

Around 30 BCE, Rome seized control of Egypt and looted the various temple complexes; in one case they destroyed walls at the Temple of Karnak to haul them out. There are now more than twice as many obelisks that were seized and shipped out by Rome as remain in Egypt. The majority were dismantled during the Roman period over 1,700 years ago and the obelisks were sent to different locations. The largest standing and tallest Egyptian obelisk is the Lateran Obelisk in the square at the west side of the Lateran Basilica in Rome at 105.6 feet (32 m) tall and a weight of More well known is the iconic , Vatican obelisk at Saint Peter's Square. Pope Sixtus V was determined to erect the obelisk in front of St Peter's, of which the nave was yet to be built. He had a full sized wooden mock up erected within months of his election. Domenico Fontana, the assistant of Giacomo Della Porta in the Basilica's construction, presented the Pope with a little model crane of wood and a heavy little obelisk of lead, which Sixtus himself was able to raise by turning a little winch with his finger. Fontana was given the project. Half buried in the debris of the ages, it was first excavated as it stood; then it took from 30 April to 17 May 1586 to move it on rollers to the Piazza: it required nearly 1000 men, 140 carthorses, and 47 cranes. The re erection, scheduled for 14 September, the Feast of the Exaltation of the Cross, was watched by a large crowd. It was a famous feat of engineering, which made the reputation of Fontana, who detailed it in a book illustrated with copperplate etchings, Della Trasportatione dell'Obelisco Vaticano et delle Fabriche di Nostro Signore Papa Sisto V (1590), which itself set a new standard in communicating technical information and influenced subsequent architectural publications by its meticulous precision. Before being re erected the obelisk was exorcised. It is said that Fontana had teams of relay horses to make his getaway if the enterprise failed. When Carlo Maderno came to build the Basilica's nave, he had to put the slightest kink in its axis, to line it precisely with the obelisk. Three more obelisks were erected in Rome under Sixtus V: at Santa Maria Maggiore, in 1587; at the Lateran Basilica, in 1588; and at the Piazza del Popolo, in 1589. An obelisk stands in front of the church of Trinità dei Monti, at the head of the Spanish Steps. Another obelisk in Rome is sculpted as carried on the back of an elephant. Rome lost one of its obelisks, the Boboli obelisk which had decorated the temple of Isis, where it was uncovered in the 16th century. The Medici claimed it for the Villa Medici, but in 1790 they moved it to the Boboli Gardens attached to the Palazzo Pitti in Florence, and left a replica in its place. Not all the Egyptian obelisks in the Roman Empire were set up at Rome: Herod the Great imitated his Roman patrons and set up an obelisk, Caesarea obelisk, made out of Egyptian red granite in the hippodrome of his new city Caesarea in northern Judea. This one is about 40 feet (12 m) tall and weighs about It was discovered by archaeologists and has been re erected at its former site. In 357 CE, Emperor Constantius II had two Karnak Temple obelisks removed and transported down the Nile to Alexandria to commemorate his ventennalia, the 20th year of his reign. Afterward, one was sent to Rome and erected on the spina of the Circus Maximus, and is today known as the Lateran Obelisk. The other one, known as the Obelisk of Theodosius, remained in Alexandria until 390 CE, when Emperor Theodosius I had it transported to Constantinople (now Istanbul) and put up on the spina of the Hippodrome of Constantinople (now Sultan Ahmet Square). It once stood 95 feet (29 m) tall and weighed ; however, its lower section (which reputedly also once stood in the hippodrome) is now lost, reducing the obelisk's size to 65 feet (20 m).

The Ancient Romans populated their city with 8 large and 42 small Egyptian obelisks. More have been re erected elsewhere, and the best known examples outside Rome are the pair of Cleopatra's Needles in London, England (69 feet (21 m)), and New York City, US (70 feet (21 m)), and the 75 feet (23 m) over Luxor Obelisk at the Place de la Concorde in Paris, France. Obelisks were being shipped out of Egypt as late as the nineteenth century when three of them were sent to London, New York and Paris. Their transportation was covered by various newspapers.

The prehistoric Tello Obelisk, found in 1919 at Chavín de Huantar in Peru, is a monolith stele with obelisk like proportions. It is 2.52 metres tall and was carved in a design of low relief with Chavín symbols, such as bands of teeth and animal heads. Long housed in the Museo Nacional de Arqueología, Antropología e Historia del Perú in Lima, it was relocated to the Museo Nacional de Chavín, which opened in July 2008. The obelisk was named for the archeologist Julio C. Tello, who discovered it and was considered the 'father of Peruvian archeology'. He was America's first indigenous archeologist.

Egyptian obelisks remain a source of fascination, serving as a reminder of past glories and a symbol of state power. A majority of modern obelisks are built of masonry or concrete, so not monolithic like their Egyptian counterparts, and are often oversized. Examples from the 19th and 20th centuries include the Stone of the Empress (1835) in Helsinki, the Wellington Monument (1861) in Dublin, the Washington Monument (1884) in Washington, D. C., the Obelisk of Buenos Aires (1936) in Buenos Aires, the Monument to the People's Heroes (1958) in Tiananmen Square, Beijing and the National Monument (1975) in Jakarta. A few, however, continue the ancient tradition of the monolithic obelisk.

In Rome, the Via della Conciliazione, cleared in 1936–1950 to link Saint Peter's Basilica to the centre of the capital is lined with obelisks serving as lampposts. In France and other European countries, monuments to the dead, such as headstones and grave markers, were very often given a form of obelisks, but they are of more modest size. The practice is also still widespread in the Islamic world. Modern obelisks have also been used in surveying as boundary markers.

In late summer 1999, Roger Hopkins and Mark Lehner teamed up with a NOVA crew to erect a 25 ton obelisk. This was the third attempt to erect a 25 ton obelisk; the first two, in 1994 and 1999, ended in failure. There were also two successful attempts to raise a 2 ton obelisk and a 9 ton obelisk. Finally in August–September 1999, after learning from their experiences, they were able to erect one successfully. First Hopkins and Rais Abdel Aleem organized an experiment to tow a block of stone weighing about 25 tons. They prepared a path by embedding wooden rails into the ground and placing a sledge on them bearing a megalith weighing about 25 tons. Initially they used more than 100 people to try to tow it but were unable to budge it. Finally, with well over 130 people pulling at once and an additional dozen using levers to prod the sledge forward, they moved it. Over the course of a day, the workers towed it 10–20 feet. Despite problems with broken ropes, they proved the monument could be moved this way. Additional experiments were done in Egypt and other locations to tow megalithic stone with ancient technologies, some of which are listed here. One experiment was to transport a small obelisk on a barge in the Nile River. The barge was built based on ancient Egyptian designs. It had to be very wide to handle the obelisk, with a 2 to 1 ratio length to width, and it was at least twice as long as the obelisk. The obelisk was about 10 feet (3 m) long and no more than A barge big enough to transport the largest Egyptian obelisks with this ratio would have had to be close to 200 feet (61 m) and 100 feet (30 m). The workers used ropes that were wrapped around a guide that enabled them to pull away from the river while they were towing it onto the barge. The barge was successfully launched into the Nile. The final and successful erection event was organized by Rick Brown, Hopkins, Lehner and Gregg Mullen in a Massachusetts quarry. The preparation work was done with modern technology, but experiments have proven that with enough time and people, it could have been done with ancient technology. To begin, the obelisk was lying on a gravel and stone ramp. A pit in the middle was filled with dry sand. Previous experiments showed that wet sand would not flow as well. The ramp was secured by stone walls. Men raised the obelisk by slowly removing the sand while three crews of men pulled on ropes to control its descent into the pit. The back wall was designed to guide the obelisk into its proper place. The obelisk had to catch a turning groove which would prevent it from sliding. They used brake ropes to prevent it from going too far. Such turning grooves had been found on the ancient pedestals. Gravity did most of the work until the final 15° had to be completed by pulling the obelisk forward. They used brake ropes again to make sure it did not fall forward. On 12 September they completed the project. This experiment has been used to explain how the obelisks may have been erected in Luxor and other locations. It seems to have been supported by a 3,000 year old papyrus scroll in which one scribe taunts another to erect a monument for "thy lord". The scroll reads "Empty the space that has been filled with sand beneath the monument of thy Lord." To erect the obelisks at Luxor with this method would have involved using over a million cubic meters of stone, mud brick and sand for both the ramp and the platform used to lower the obelisk. The largest obelisk successfully erected in ancient times weighed A stele was found in Axum, but researchers believe it was broken while attempting to erect it.