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2. Travertine - Wikipedia

   en.wikipedia.org/wiki/Travertine

   Travertine terraces at Mammoth Hot Springs, Yellowstone National Park, in 2016 Calcium-carbonate-encrusted, growing moss in a low-temperature freshwater travertine formation (1 euro coin for scale) Travertine (/ ˈ t r æ v ər t iː n / TRAV-ər-teen) [1] is a form of terrestrial limestone deposited around mineral springs, especially hot ...

3. Tufa - Wikipedia

   en.wikipedia.org/wiki/Tufa

   Tufa columns at Mono Lake, California. Tufa is a variety of limestone formed when carbonate minerals precipitate out of water in unheated rivers or lakes. Geothermally heated hot springs sometimes produce similar (but less porous) carbonate deposits, which are known as travertine or thermogene travertine.

4. Bunshaft Residence - Wikipedia

   en.wikipedia.org/wiki/Bunshaft_Residence

   The exterior walls were poured-in-place concrete clad with travertine and the exposed roof structure was made up of pre-stressed concrete beams with a "double T" shape, exposed on either edge with the openings filled with plate glass clerestory windows. The ends of the house were shaded by a 4-foot (1.2 m) extension of the roof and side walls ...

5. Cast stone - Wikipedia

   en.wikipedia.org/wiki/Cast_stone

   Cast stone or reconstructed stone is a highly refined building material, a form of precast concrete used as masonry intended to simulate natural-cut stone. It is used for architectural features: trim, or ornament; facing buildings or other structures; statuary; and for garden ornaments.

6. Roman concrete - Wikipedia

   en.wikipedia.org/wiki/Roman_concrete

   Roman concrete, also called opus caementicium, was used in construction in ancient Rome. Like its modern equivalent , Roman concrete was based on a hydraulic-setting cement added to an aggregate . Many buildings and structures still standing today, such as bridges, reservoirs and aqueducts, were built with this material, which attests to both ...

7. LA's Getty Center's art safeguarded as Palisades fire rages - AOL

   www.aol.com/news/las-getty-centers-art...

   The J. Paul Getty Museum's priceless collection of artwork, which includes paintings by Van Gogh, Rembrandt, Monet and Degas, once again found itself in the path of destruction as the Palisades ...