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  2. List of tallest buildings - Wikipedia

    en.wikipedia.org/wiki/List_of_tallest_buildings

    In contrast, the Chrysler Building employed a very large 38.1 m (125 ft) spire secretly assembled inside the building to claim the title of world's tallest building with a total height of 318.9 m (1,046 ft), although it had a lower top occupied floor and a shorter height when both buildings' spires were excluded.

  3. Tree height measurement - Wikipedia

    en.wikipedia.org/wiki/Tree_height_measurement

    In 2012 Google Earth began offering 3D models of some major cities using stereophotogrammetry [53] which allows users to measure the height of buildings and trees by adjusting the altitude of a Polygon in 3D, or use the Ruler function to measure the height of an object in a 3D path in Google Earth Pro. [54]

  4. Google Earth - Wikipedia

    en.wikipedia.org/wiki/Google_Earth

    Google Earth is a web and computer program that renders a 3D representation of Earth based primarily on satellite imagery. The program maps the Earth by superimposing satellite images, aerial photography, and GIS data onto a 3D globe, allowing users to see cities and landscapes from various angles. Users can explore the globe by entering ...

  5. List of tallest buildings and structures - Wikipedia

    en.wikipedia.org/wiki/List_of_tallest_buildings...

    The second-tallest structure in the world is the 679-metre-tall (2,227 ft) Merdeka 118 in Kuala Lumpur, Malaysia, while the third-tallest self-supporting structure and the tallest tower in the world is the Tokyo Skytree (634 m or 2,080 ft). The tallest guyed structure is the KRDK-TV mast in North Dakota, U.S. at 630 metres (2,060 ft).

  6. Triangulation - Wikipedia

    en.wikipedia.org/wiki/Triangulation

    Measuring the height of a building with an inclinometer. Triangulation today is used for many purposes, including surveying, navigation, metrology, astrometry, binocular vision, model rocketry and, in the military, the gun direction, the trajectory and distribution of fire power of weapons. The use of triangles to estimate distances dates to ...

  7. List of tallest freestanding structures - Wikipedia

    en.wikipedia.org/wiki/List_of_tallest...

    Due to erosion today it stands at the height of 138.8 metres (455 ft). Lincoln Cathedral: 159.7 524 1311–1549 (238 years) Church England Lincoln: Spire collapsed in 1549; today, stands at a height of 83 metres (272 ft). St. Mary's Church: 151 500 1549–1569 (20 years) Church Germany Stralsund: Beauvais Cathedral: 153 502 1569–1573 (4 years ...

  8. List of tallest buildings in Ottawa–Gatineau - Wikipedia

    en.wikipedia.org/wiki/List_of_tallest_buildings...

    Heights of buildings built in the pre-internet era on this page are measured using Google Earth measurement tools, as previously posted heights of these buildings found elsewhere on the internet are typically sourced from the now defunct site Emporis.com, which had inaccurate data.

  9. Height above mean sea level - Wikipedia

    en.wikipedia.org/wiki/Height_above_mean_sea_level

    Height above mean sea level. Height above mean sea level is a measure of a location's vertical distance (height, elevation or altitude) in reference to a vertical datum based on a historic mean sea level. In geodesy, it is formalized as orthometric height. The zero level varies in different countries due to different reference points and ...