paragraph_text: Based on these estimates, building the pyramid in 20 years would involve installing approximately 800 tonnes of stone every day. Additionally, since it consists of an estimated 2.3 million blocks, completing the building in 20 years would involve moving an average of more than 12 of the blocks into place each hour, day and night. The first precision measurements of the pyramid were made by Egyptologist Sir Flinders Petrie in 1880 -- 82 and published as The Pyramids and Temples of Gizeh. Almost all reports are based on his measurements. Many of the casing stones and inner chamber blocks of the Great Pyramid fit together with extremely high precision. Based on measurements taken on the northeastern casing stones, the mean opening of the joints is only 0.5 millimetre wide (1 / 50 of an inch).

paragraph_text: Userkaf's pyramid is located on the northeast corner of Djoser's step pyramid complex. The pyramid was originally around 49 metres (161 ft) high and 73 metres (240 ft) large with an inclination of 53° identical to that of Khufu's great pyramid for a total volume of 87,906 m3 (114,977 cu yd). The core of the pyramid is built of small, roughly-hewn blocks of local limestone disposed in horizontal layers. This meant a considerable saving of labor as compared to the large and more accurately-hewn stone cores of 4th Dynasty pyramids. However, as the outer casing of Userkaf's pyramid fell victim to stone robbers throughout the millennia, the loosely assembled core material was progressively exposed and fared much worse over time than that of the older pyramids. This explains the current ruined state of the pyramid.The pyramid core was constructed in a step-like structure, a construction technique similar to that of the 4th dynasty although the building material was of a significantly lower quality. The outer casing of the pyramid was made of fine Tura limestone which certainly ensured Userkaf's construction an appearance similar to that of the glorious 4th Dynasty pyramids. There was however no red granite paneling over the lower part of the pyramid as in the case of the Pyramid of Menkaure.

paragraph_text: Richard Seifert (born Reubin Seifert, 25 November 1910 – 26 October 2001) was a Swiss-British architect, best known for designing the Centre Point tower and Tower 42 (previously the NatWest Tower), once the tallest building in the City of London. His eponymously named practice – "R. Seifert and Partners" (later the "R. Seifert Co-Partnership") was at its most prolific in the 1960s and 1970s, responsible for many major office buildings in Central London as well as large urban regeneration projects in other major British cities.

paragraph_text: The Pyramids of Giza consist of the Great Pyramid of Giza (also known as the Pyramid of Cheops or Khufu and constructed c. 2560 -- 2540 BC), the somewhat smaller Pyramid of Khafre (or Chephren) a few hundred meters to the south - west, and the relatively modest - sized Pyramid of Menkaure (or Mykerinos) a few hundred meters farther south - west. The Great Sphinx lies on the east side of the complex. Current consensus among Egyptologists is that the head of the Great Sphinx is that of Khafre. Along with these major monuments are a number of smaller satellite edifices, known as ``queens ''pyramids, causeways and valley pyramids.

paragraph_text: The market square lies on the street running south from the palace to Ettlingen. The market square has the town hall ("Rathaus") to the west, the main Lutheran church ("Evangelische Stadtkirche") to the east, and the tomb of Margrave Charles III William in a pyramid in the buildings, resulting in Karlsruhe being one of only three large cities in Germany where buildings are laid out in the neoclassical style.

paragraph_text: Many historical structures stand in Maribor. Of the remains of city walls surrounding the old downtown, the most prominent are the Judgement Tower, the Water Tower, and the Jewish Tower. Maribor Cathedral was built in the Gothic style in the 13th century. Maribor Synagogue was built in the 14th century, and is the second oldest synagogue of Europe. Today it serves as a centre for cultural activities. Other prominent Medieval buildings are Maribor Castle, Betnava Castle, and the ruins of Upper Maribor Castle on Pyramid Hill. Town Hall was constructed in the Renaissance style, and the Plague Column in the Baroque style.

paragraph_text: Purvis Young (February 4, 1943 – April 20, 2010) was an American artist from the Overtown neighborhood of Miami, Florida. Young's work, often a blend of collage and painting, utilizes found objects and the experience of African Americans in the south. Young gained recognition as a cult contemporary artist, with a collectors' following including Jane Fonda, Damon Wayans, Jim Belushi, Dan Aykroyd, and others. In 2006 a feature documentary titled "Purvis of Overtown" was produced about his life and work. His work is found in the collections of the American Folk Art Museum, the Corcoran Gallery of Art, the High Museum of Art, the National Museum of African American History and Culture, the Philadelphia Museum of Art, and others. Visit Purvis Young Museum, in Fort Lauderdale, Florida. In 2018, he was inducted into the Florida Artists Hall of Fame.

paragraph_text: Erica pyramidalis (or the pyramid heath) was a species of erica that was endemic to the city of Cape Town, South Africa. It was driven to extinction by the early 20th century, due to habitat destruction from the expanding city.

paragraph_text: There are three known chambers inside the Great Pyramid. The lowest chamber is cut into the bedrock upon which the pyramid was built and was unfinished. The so - called Queen's Chamber and King's Chamber are higher up within the pyramid structure. The main part of the Giza complex is a setting of buildings that included two mortuary temples in honour of Khufu (one close to the pyramid and one near the Nile), three smaller pyramids for Khufu's wives, an even smaller ``satellite ''pyramid, a raised causeway connecting the two temples, and small mastaba tombs surrounding the pyramid for nobles.

paragraph_text: The Royal Exchange in London was founded in the 16th century by the merchant Thomas Gresham on the suggestion of his factor Richard Clough to act as a centre of commerce for the City of London. The site was provided by the City of London Corporation and the Worshipful Company of Mercers, who still jointly own the freehold. It is trapezoidal in shape and is flanked by Cornhill and Threadneedle Street, which converge at Bank junction in the heart of the City. The building's original design was inspired by a bourse Gresham had seen in Antwerp and was Britain's first specialist commercial building.

paragraph_text: The Pyramid of the Sun is the largest building in Teotihuacan, believed to have been constructed about 200 CE, and one of the largest in Mesoamerica. Found along the Avenue of the Dead, in between the Pyramid of the Moon and the Ciudadela, and in the shadow of the massive mountain Cerro Gordo, the pyramid is part of a large complex in the heart of the city.

paragraph_text: Ground was broken for the Luxor in March 1992 and the resort officially opened at 4 AM on October 13, 1993, to a crowd of 10,000 people. When it opened, the pyramid, which cost $375 million to build, was the tallest building on the strip and contained 2,526 rooms and a 100,000 sq ft (9,300 m) casino. The resort was financed by ``petty cash ''earned from other Circus Circus Enterprises properties and did not include any outside financial investors. The hotel's pyramid is similar in size to the Red Pyramid and Bent Pyramid of Egypt.

paragraph_text: Die zärtlichen Verwandten (The Tender Kinsfolk, The Tender Relatives) is a 1930 German comedy film directed by Richard Oswald and starring Harald Paulsen, Charlotte Ander and Felix Bressart. The film's art direction was overseen by Franz Schroedter.

paragraph_text: After his investigations Perring buried the robbers tunnel which remains inaccessible to this day. The pyramid of Userkaf entered the official records a few years later in 1842 when Karl Richard Lepsius catalogued it in his list of pyramids under number XXXI. Since Perring had already buried the robbers tunnel by that time, K. R. Lepsius did not investigate the pyramid any further.The pyramid was then neglected until October 1927, when Cecil Mallaby Firth and the architect Jean-Philippe Lauer started excavating there. During the first season of excavation, Firth and Lauer cleared the south side of the pyramid area, discovering Userkaf's mortuary temple and tombs of the much later Saite period. The following year, Firth and Lauer uncovered a limestone relief slab and a colossal red granite head of Userkaf, thus determining that he was the pyramid owner. After Firth's death in 1931 no excavations took place on site until they were resumed by Lauer in 1948. Lauer worked there until 1955, re-clearing and re-planning the mortuary temple and investigating the eastern side of the pyramid. Research on the north and west sides of the mortuary complex was conducted starting in 1976 by Ahmed el-Khouli who excavated and restored the pyramid entrance. The entrance was, however, buried under rubble in an earthquake in 1991. More recent work on the pyramid was undertaken by Audran Labrousse in 2000.

paragraph_text: In 2012, the city contained a total of 594 high-rise buildings, with 8 under construction, 71 planned and 39 at proposal stage making the city's skyline the second largest in Australia. The CBD is dominated by modern office buildings including the Rialto Towers (1986), built on the site of several grand classical Victorian buildings, two of which — the Rialto Building (1889) designed by William Pitt and the Winfield Building (1890) designed by Charles D'Ebro and Richard Speight — still remain today and more recently hi-rise apartment buildings including Eureka Tower (2006), which is listed as the 13th tallest residential building in the world in January 2014.

paragraph_text: The Transamerica Pyramid at 600 Montgomery Street between Clay and Washington Streets in the Financial District of San Francisco, California, United States, is a 48 - story postmodern building and the second - tallest skyscraper in the San Francisco skyline. Its height will be surpassed by Salesforce Tower, currently under construction. The building no longer houses the headquarters of the Transamerica Corporation, which moved its U.S. headquarters to Baltimore, Maryland, but it is still associated with the company and is depicted in the company's logo. Designed by architect William Pereira and built by Hathaway Dinwiddie Construction Company, at 853 feet (260 m), on completion in 1972 it was the eighth - tallest building in the world.

paragraph_text: Richard Purvis was born in San Francisco on August 25, 1913. He began playing the organ publicly at the age of 14 in churches and in the Civic Auditorium in San Francisco. Purvis' teacher, Wallace Arthur Sabin, played the dedicatory concert in 1915. In addition to recitals and church services, Purvis played nightly recitals broadcast from the 7-rank style "E" Wurlitzer organ at the Chapel of the Chimes over local radio station KRE. His stage name was Don Irving and his theme song was 'I'll Take an Option on You'.

paragraph_text: The Louvre Pyramid (Pyramide du Louvre) is a large glass and metal pyramid designed by Chinese - American architect I.M. Pei, surrounded by three smaller pyramids, in the main courtyard (Cour Napoléon) of the Louvre Palace (Palais du Louvre) in Paris. The large pyramid serves as the main entrance to the Louvre Museum. Completed in 1989, it has become a landmark of the city of Paris.

paragraph_text: A food pyramid or diet pyramid is a triangular diagram representing the optimal number of servings to be eaten each day from each of the basic food groups. The first pyramid was published in Sweden in 1974. The 1992 pyramid introduced by the United States Department of Agriculture (USDA) was called the ``Food Guide Pyramid ''. It was updated in 2005, and then it was replaced by MyPlate in 2011.

paragraph_text: The most famous Egyptian pyramids are those found at Giza, on the outskirts of Cairo. Several of the Giza pyramids are counted among the largest structures ever built. The Pyramid of Khufu at Giza is the largest Egyptian pyramid. It is the only one of the Seven Wonders of the Ancient World still in existence.

Question: What is the pyramid building in the city where Richard Purvis died?
Answer: Transamerica Pyramid