Travertine
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Travertine is a form of fresh water limestone deposited around mineral springs, especially hot springs. It often has a fibrous or concentric appearance and exists in white, tan, cream-colored, and rus
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)
Tourists climb Dunns River Falls with the help of guides.
Badab-e Surt's stepped travertine terrace formations. This travertine owes its red colour terraces to iron carbonate.
Colosseum
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The Colosseum is an elliptical amphitheatre in the centre of the city of Rome, Italy, just east of the Roman Forum. It is the largest ancient amphitheatre ever built, and is the largest standing amphi
Travertine
…stone when polished. The Romans mined deposits of travertine for building temples, monuments, aqueducts, bath complexes, and amphitheaters such as the Colosseum, the largest building in the world constructed mostly of travertine. In Italy, well-known travertine quarries exist in Tivoli and Guidonia Montecelio…
Looking east from the Piazza di Santa Francesca Romana, 2020
Interior of the Colosseum by late nineteenth century photographer Francis Frith
Sestertius of Titus celebrating the inauguration of the Colosseum (minted 80 AD).
The Colosseum in the 1530s, sketched by Maarten van Heemskerck, and used as the model for his later Self-Portrait with the Colosseum and Octo Mundi Miracula.