Definition of material - travertine

What is travertine? (stone)

Travertine is a form of limestone deposited by mineral springs, especially hot springs. Travertine often has a fibrous or concentric appearance and exists in white, tan, and cream-colored varieties. It is formed by a process of rapid precipitation of calcium carbonate, often at the mouth of a hot spring or in a limestone cave. In the latter, it can form stalactites, stalagmites, and other speleothems. It is frequently used in Italy and elsewhere as a building material.

• The Apostolic Palace
  in Vatican City
• Church of the Gesu
  in Rome
• The Venetian Square
  in Rome
• Piazza Navona (Navona Square)
  in Rome
• Laribal Gardens - Cat Fountain
  in Barcelona
• The Sistine Chapel
  in Vatican City
• Pantheon
  in Rome
• Galleria Borghese
  in Rome
• The Capitoline Hill
  in Rome
• Piazza Navonas' Fountains
  in Rome
• Imperial Castle in Poznań
  in Poznań
• Pope's summer residence in Castel G...
  in Castel Gandolfo
• St. Peter's Basilica
  in Vatican City
• Pons Fabricius
  in Rome
• The Spanish Stairs
  in Rome
• Cathedral–Mosque of Córdoba
  in Córdoba
• Sacré-Coeur
  in Paris
• Church of the Saviour in Granada
  in Granada
• Basilica of Saint Paul Outside the Walls
  in Vatican City
• The St. Angel Castle
  in Rome

• Rome (11)
• Vatican City (4)
• Granada (1)
• Venice (1)
• Amsterdam (1)
• Castel Gandolfo (1)
• Berlin (1)
• Poznań (1)
• Barcelona (1)
• Córdoba (1)
• Paris (1)